Question

4. Complete the following two-column proof.

Given: 5x - 2 = -12
Prove: x = -2

help please.

Answer 1

x does equal -2

Explanation:

Substitue x = -2:

[5(-2) -2 = -12]

Simplify:

[-10-2 = -12]

Add/Subtract from left to right:

[-12 = -12]

Therefore:

x = -2