28 + x = 7 - 2x explain to me how to figure out these
28 + x = 7 - 2x the idea is to get x by itself
Add 2x to both sides
28 + x + 2x = 7 simplify
28 + 3x = 7 subtract 28 from each side
3x = -21 divide both sides by 3
x = -7
