Q: Solve:
Solve -276*f + 257*f + 342 = 0 for f.

A: 18

Q: Solve:
Solve -815*m - 5594 - 13672 = -405*m + 604*m for m.

A: -19

Q: Solve:
Solve 23*u - 49057 = -48597 for u.

A:
20