-8+2+2=2-x

$$\\-8+2+2=2-x\\ -4=2-x\\ $subtract 2 from both sides$\\ -6=-x\\ $multiply both sides by -1$\\ 6=x\\ x=6$$

-8+2+2 equals -4, and to get the 2 on the other side to equal -4, you would have to subtract it by 6.

x=6

So, you have to go through the steps. First, you add 2+-8, which equals -6, add 2 again, -4, so-4=2-x, then to equal out the sides, you subtract 2 from 4 and 2, 4=-x, so -4=x! Got it?