X+2=2 - x=0
X+3=3 - x=6
8X-3=5 - x=1
X+10=40 - x=30
X = 12 – 4 - x=8
X = 20 + 12 - x=32
4X + 2 = 10 - x=2
X + 4 = 15 - x=11
X+5=8 - X= 3