Write down the solution for this math problem: Solve 583*f = 489*f - 9566 + 3926 for f.
answer: -60

Write down the solution for this math problem: Solve -63 = -126*c + 135*c for c.
answer: -7

Write down the solution for this math problem: Solve 108*h - 1342 = 11 - 57 for h.
answer: 12

Write down the solution for this math problem: Solve -583 - 496 = 31*s + 595 for s.
answer:
-54