Q: Solve:
Solve -20976286*f - 2430 = -20976376*f for f.

A: 27

Q: Solve:
Solve -1226*w + 5679 = -2639 - 8846 for w.

A: 14

Q: Solve:
Solve -76*b + 88 = -1888 for b.

A:
26