9^-x=27 (3/4)^=3/4)^5

Question

9^-x=27
(3/4)^=3/4)^5

Answer 1

Решение
1)  9^x = 27
3^(2x) = 3³
2x = 3
x = 3/2
x = 1,5
2)  (3/4)^x = (3/4)^5
x = 5