3^2x-3 =1/81 tentukan nilai x

3^2x-3 =1/81
3^2x-3 = 81^-1
3^2x-3 =(3^3)^-1
3^2x-3 = 3^-3
2x - 3 = - 3
2x = - 3 + 3
2x = 0
x = 0

klau enggak jelas bisa di tanyakan