Q: Solve:
Solve 560 = 137*b - 1561 + 614 for b.

A: 11

Q: Solve:
Solve 0 = 260*w + 57*w + 124*w + 3969 for w.

A: -9

Q: Solve:
Solve -62*z + 48*z = -42 for z.

A:
3