Question

solve for x. 7 + 2x = 15 simplify your answer as much as possible.

Explanation:

Step1: Subtract 7 from both sides

$7 + 2x - 7 = 15 - 7$
$2x = 8$

Step2: Divide by 2 on both sides

$\frac{2x}{2} = \frac{8}{2}$
$x = 4$

Answer:

$x=4$