Justify each step for 2x-5=-20

2x-5=-20

You'd add 5 to both sides because when you add 5 to - 5, they cancel out, therefore making it the right step.

2x = - 15

Divide both sides by 2 because your goal is to try to get x by itself. The opposite of multiplying 2 and x is dividing x by 2.

Final Answer: x = - 7.5