8n + 7 = 31
n = 3
3j - 20 = 16
j = 12
7p + 11 = -31
p = -6
3x + 10 = 1
x = -3
2h + 10 = -12
h = -11
6k - 9 = 15
k = 4
8k - 40 = 16
k = 7
9q + 10 = 108
q = 12
6w - 125 = 1
w = 21
5d -9 = -24
d = -3
(x / 8) + 7 = 9
x = 16
(r/3) - 16 = 2
r = 54
(n / 5) - 4 = -10
n = -30
(w / 2) - 16 = 5
w = 42
(r / -2) + 11 =15
r = -8
(s / 4) - 5 = 1
s = 24
(w / -5) - 4 = -2
w = -10
(a / 5) + 8 = 9
a = 5
(m / 8 ) -12 - 3 = -12
m = 24
(w / -3) + 6 - 1 = 2
w = 9