Addition
4 + x = 10
x = 6
9 - c = 3
c = 6
200 + x = 310
x = 110
5 + v = 15
v = 10
15 - t = 7
t = 8
v - 41 = 28
v = 69
h + 8 = 16
h = 8
y - 10 = 30
y = 40
q(4) = 16
q = 4
k + 12 = 30
k = 18
b - 25 = 25
b = 50
e / 5 = 15
e = 75
20 + q = 55
q = 35
60 - r = 42
r = 18
12(2) + g = 36
g = 12