Answer
$x=3$.
Work Step by Step
The given equation is
$\Rightarrow 15-2x=3x$
Add $2x$ to both sides.
$\Rightarrow 15-2x+2x=3x+2x$
Simplify.
$\Rightarrow 15=5x$
Divide both sides by $5$.
$\Rightarrow \frac{15}{5}=\frac{5x}{5}$
Simplify.
$\Rightarrow 3=x$.
