Write down the solution for this math problem: Solve -6*f = -19*f + 89*f - 3990 - 7562 for f.
answer: 152

Write down the solution for this math problem: Solve 0 = 13*v - 1054 + 1080 for v.
answer: -2

Write down the solution for this math problem: Solve 0 = -93*s - 503 + 317 for s.
answer: -2

Write down the solution for this math problem: Solve 120*x = 15385972 - 15396172 for x.
answer:
-85