3 ∗ 2 x + 5 = 8 ∗ 3 x + 3 {\displaystyle 3*2^{x+5}=8*3^{x+3}}
3 ∗ 2 x + 5 = 8 ∗ 3 x + 3 3 ∗ 2 x + 5 = 2 3 ∗ 3 x + 3 x + 3 = 1 x + 5 = 3 x = − 2 x = − 2 {\displaystyle {\begin{aligned}3*2^{x+5}=8*3^{x+3}\\3*2^{x+5}=2^{3}*3^{x+3}\\x+3=1\ \ \ x+5=3\\x=-2\ \ \ x=-2\end{aligned}}}