Question

2/9^(2x+3)=4,5^(x-2)

Answer 1

2/9^(2x+3)=4,5^(x-2)
(2/9) ^(2x+3)=(9/2)^ (x-2)
(2/9) ^(2x+3)=(2/9)^ -(x-2)
2x + 3 = - (x - 2)
2x + 3 =  - x + 2 
2x + x = 2 - 3 
3x = - 1 
x = - 1/3 

Всё!