Q: Solve:
Solve -260*f + 30 = -254*f for f.

A: 5

Q: Solve:
Solve -10*w + 9*w + 4 = 0 for w.

A: 4

Q: Solve:
Solve 25*h = 78*h - 296*h - 3888 for h.

A:
-16