we have
y=2x
solve for x
that means
Isolate the variable x
so
step 1
Divide by 2 both sides -----> by division property of equality
[tex]\begin{gathered} \frac{y}{2}=\frac{2x}{2} \\ \\ \frac{y}{2}=x \\ \text{rewrite} \\ x=\frac{y}{2} \end{gathered}[/tex]