Cara ngerjain nomer 12 kak

3/2 + 1 + 2/3 +.........

rasio = 1 / 3/2 = 2/3
a = 3/2

Deret tak hingga
Sn = a / 1 - r
Sn = 3/2 / 1 - 2/3
Sn = 3/2 / 1/3
Sn = 3/2 × 3
Sn = 9/2 (A)

smg membantu