8x/2x=4
(23)x/2x=22
23x-x=22
=>3x-x=2
2x=2
x=2÷2
x=1
\(\dfrac{8^x}{2^x}=4\Rightarrow\left(8:2\right)^x=4\Rightarrow4^x=4\Rightarrow x=1\)
\(\dfrac{8^x}{2^x}=4\\ \Rightarrow\left(\dfrac{8}{2}\right)^x=4\\ \Rightarrow4^x=4\\ \Rightarrow4^x=4^1\\ \Rightarrow x=1\)