20+5 - x=25
11+3X0 - x=11
100-10X5 - x=50
2+7X4 - x=30
5X4-2X5 - x=10
50:5+2 - x=12
10+2:2 - x=11
5:5+8:8 - x=2
24:12+6X2 - x=14