Question

((4)/(5))^(x+5)=((25)/(16))^(-2x)

Answer 1

(4/5)^(x+5)=(4/5)^4x
4x=x+5
x=5/3

Answer 2

\[(4\div5)^{x+5} = (25\div16)^{-2x}\]
\[(4\div5)^{x+5} = (16\div25)^{2x}\]
\[(4\div5)^{x+5} = (4\div5)^{4x}\]
\[x + 5 = 4x\]