Mencari Suku ke-19 dalam Deret Aritmatik

Dalam matematika, deret aritmatika adalah deret bilangan dimana setiap suku berbeda dengan suku sebelumnya dengan selisih yang tetap. Dalam persoalan ini, kita diberikan informasi bahwa jumlah dari suku ke-2, ke-15, dan ke-40 dalam deret aritmatika adalah 210. Tugas kita adalah mencari suku ke-19 dalam deret ini. Untuk memecahkan masalah ini, kita perlu menggunakan rumus umum untuk suku ke-n dalam deret aritmatika. Rumus ini diberikan oleh: Un = a + (n - 1)d Dimana Un adalah suku ke-n, a adalah suku pertama dalam deret, n adalah indeks suku yang ingin kita cari, dan d adalah selisih antara suku-suku dalam deret. Dalam kasus ini, kita tidak diberikan suku pertama atau selisihnya. Namun, kita dapat menggunakan informasi yang diberikan bahwa jumlah dari suku ke-2, ke-15, dan ke-40 adalah 210 untuk mencari suku pertama dan selisihnya. Mari kita selesaikan masalah ini langkah demi langkah: Langkah 1: Mencari selisih (d) Kita dapat menggunakan rumus jumlah deret aritmatika untuk mencari selisih (d). Rumus ini diberikan oleh: Sn = (n/2)(2a + (n - 1)d) Dalam kasus ini, jumlah deret adalah 210 dan jumlah suku adalah 3. Kita dapat menggantikan nilai-nilai ini ke dalam rumus dan mencari selisih (d): 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 = (3/2)(2a + 2d) 210 =