Addition
x + 8 = 16
x=8
b - 4 = 1
b = 5
2x = 6
x=3
x= 16
x + 10 = 30
x=20
x - 3 = 8
7x = 42
x= 6
x = 6
33 + b = 42
b=32
b - 17 = 43
b=60
11x= 44
x=4
x ÷ 4 = 3
x = 12
2x + 1 = 5
x = 2
3x - 2 = 7
x=3
9x=81
x=9
b = 35
3x + 6 = 21
x=5
4x-3=25
x=7
x=8
x = 9