Addition
x + 7 = 9
x = 2
x - 5 = 12
x = 17
5x = 20
x = 4
x/5 = 3
x = 15
3 + 4 times 2
11
8 + x = 16
x = 8
4 = y - 9
y = 13
3y = 18
y = 6
y/4 = 6
y = 24
(8-3) times 4
20
22 = x + 12
x = 10
a - 3 = 10
a = 13
7a = 35
a = 5
a/7 = 8
a = 56
12 divide (2 times 3)
2
32 = 21 + x
x = 11
2 = m - 7
m = 9
9m = 81
m = 9
m/9 = 2
m = 18
5 + 2^3
13
x + 2.5 = 4.2
x = 1.7
p - 15 = 8
p = 23
4p = 28
p = 7
p/6 = 9
p = 54
(6 + 2) divide 4
2