#### Answer

$x=-4$

#### Work Step by Step

Use the power rule: $a^p=a^q$ .
We can see that the base $a=e$ is the same on both sides of the equation.
So, the exponents will also be equal.
This implies that $p=q$
Therefore, $x=3x+8 \\ x-3x=8 \\ -2x=8 \\ x=-4$