Write down the solution for this math problem: Solve 3194*h = 3137*h - 912 for h.
answer: -16

Write down the solution for this math problem: Solve 0 = 17*f + 51 + 51 for f.
answer: -6

Write down the solution for this math problem: Solve 2118*w - 40356 = -2232 for w.
answer: 18

Write down the solution for this math problem: Solve -25*r - 369*r = 5516 for r.
answer:
-14