I already know that X=65 but I need to find out what the first step would be to solve the equation for X

We have the following:
[tex]\frac{4}{13}x=20[/tex]The first step is:
[tex]\begin{gathered} \frac{4}{13}x\cdot\frac{13}{4}=20\cdot\frac{13}{4} \\ x=65 \end{gathered}[/tex]Therefore, the answer is D. And solution is 65