Answer:
Step 1: Simplify both sides of the equation.
5x + 2 (x+4) = 64
5x + (2)(x) + (2)(4) = 64 (Distribute)
5x + 2x + 8 =64
(5x+2x) + (8) = 64(Combine Like Terms)
7x + 8 = 64
Step 2: Subtract 8 from both sides.
7x + 8 − 8 = 64 − 8
7x = 56
Step 3: Divide both sides by 7.
7x/7 = 56/ 7
x=8
I use Algebra Calculator MathPapa it shows the steps.