Question

student belcher, cash
properties of parallelograms
example: opposite angles equal.
answer: round to whatever you see in the problem.

Explanation:

Step1: Set up the equation

Given $5x + 15=75$

Step2: Subtract 15 from both sides

$5x+15 - 15=75 - 15$
$5x = 60$

Step3: Divide both sides by 5

$\frac{5x}{5}=\frac{60}{5}$
$x = 12$

Answer:

$x = 12$