The image shows a simple linear equation.
We can find the solution, following these steps.
Step 1
Cross multiply
[tex]\begin{gathered} \frac{9}{2}=\frac{x}{8} \\ 2x=72 \\ \end{gathered}[/tex]Step 2
Divide both sides by 2
[tex]\begin{gathered} \frac{2x}{2}=\frac{72}{2} \\ x=36 \end{gathered}[/tex]The answer is 36