Question:
Solve 3039*u = -994*u - 609715 + 101557 for u..

Answer:
-126

Question:
Solve -111*z = -105*z - 12 for z..

Answer:
2

Question:
Solve -4 = 15*p + 116 for p..

Answer:
-8

Question:
Solve 0*o + 27 = 9*o for o..

Answer:
3