ADDITION
8 + r = 20
r = 12
x - 4 = 13
x = 17
9k = 54
k = 6
b/18 = 6
b = 108
2x=-10
x = -5
2 + j = -43
j = -45
l - 5 = 23
l = 28
-6v = 36
v = -6
u/5 = 20
u = 100
b/-5=-20
b = 100
s + 7 = 9
s = 2
w - 45 = 15
w = 60
8z = 72
z = 9
h/-6=-8
h = 48
x-4=-3
x = 1
-3 + c = -18
c = -15
h - 15 = -1
h = 14
-5h = -35
h = 7
p/6 = 36
p = 216
y+2=15
y = 13
-9 + h = -45
h = -36
y - (-18) = 25
y = 7
3r = -45
r = -15
n/48 = -8
n = -384
-6p=-36
p = 6