9 = w - 14

A () 24

B () 126

C () 5

D () 23

If you're solving for W these would be the steps.

9 = w-14

You want to get the w on one side alone so you move the 14 to the other side by doing the opposite of it. Since it's - 14 you would add 14 on both sides.

9 = w - 14

+14 = w + 14

23 = w

Your answer is D. 23.