Question 173825
You did not include instructions but I think you want to solve for y.

To do so, we isolate y.

Add 4 from both sides as step 1.

-y - 4 + 4 = 12 + 4

On the left side, -4 and +4 cancel out.

We now have this:

-y = 16

Next, divide both sides by -1.

Final answer: y = -16