Question

find the value of x. x =

Explanation:

Step1: Identify vertical - angle relationship

Vertical angles are equal. Here, $9x$ and $144^{\circ}$ are vertical angles.
So, $9x = 144$.

Step2: Solve for $x$

Divide both sides of the equation $9x = 144$ by 9. We get $x=\frac{144}{9}$.
$x = 16$.

Answer:

$16$