Q: Solve:
Solve 304*u - 244*u - 60 = 0 for u.

A: 1

Q: Solve:
Solve -409*s - 200 = 428*s - 847*s for s.

A: 20

Q: Solve:
Solve 280 = -57*f + 22*f for f.

A:
-8