Q: Solve:
Solve 390 = 1021624*q - 1021585*q for q.

A: 10

Q: Solve:
Solve 7*c - 32*c = 375 for c.

A: -15

Q: Solve:
Solve -367*f - 507*f + 13670 + 11635 = -21017 for f.

A:
53