1) x + 8 = -52
Subtract both sides by 8:
x = -60
2) y - 17 = -37
Add 17 to both sides:
y = -20
3) -12 + k = 18
Add 12 to both sides:
k = 30
4) 5m = -20
Divide both sides by 5:
m = -4
5) x/9 = 3
Multiply both sides by 9:
x = 27
6) 4z/5 = 16
Multiply both sides by 5/4:
z = 20