Question

Prove that if -5(x + 4) = 70, the x = -18. Write a justification for each step.

Answer 1

x=-18

Explanation:

-5(x+4)=70

x+4=-14

x=-14-4

x=-18

Answer 2

Explanation:

Let's solve your equation step-by-step.

−5(x+4)=70

Step 1: Simplify both sides of the equation.

−5(x+4)=70

(−5)(x)+(−5)(4)=70(Distribute)

−5x+−20=70

−5x−20=70

Step 2: Add 20 to both sides.

−5x−20+20=70+20

−5x=90

Step 3: Divide both sides by -5.

−5x

−5

=

90

−5

x=−18