Q: Solve:
Solve 0 = 7*h + 4*h - 11 for h.

A: 1

Q: Solve:
Solve 198*f - 2750 = -5825 - 6231 for f.

A: -47

Q: Solve:
Solve 839*s + 273 = 818*s for s.

A:
-13