Question

$7 - 2x = 13$

Explanation:

Step1: Subtract 7 from both sides

$7 - 2x - 7 = 13 - 7$
$-2x = 6$

Step2: Divide by -2 on both sides

$\frac{-2x}{-2} = \frac{6}{-2}$

Answer:

$x = -3$