Answer
$x=9$
Work Step by Step
$\begin{align*}
\frac{9\pi}{\pi}&=\frac{\pi{x}}{\pi}&\text{Divide }\pi \text{ to both sides of the equation.}\\
9&=x &\text{Simplify.}
\end{align*}$
Check the solution by substituting $9$ to $x$ in the original equation:
$\begin{align*}
9\pi&\stackrel{?}{=}\pi(9)\\
9\pi&\stackrel{\checkmark}{=}9\pi
\end{align*}$
Thus, the solution is $x=9$.
