Jawabanmu

2014-08-18T21:41:59+07:00
(3^n * 3^1 - 3^n) / (3^n + 3^n * 3^-1)
= (3^n (3-1))/(3^n(1+3^-1))
= (3-1)/ (1+ 1/3)
= 3/2