Q: Solve:
Solve 0 = -560*b - 1889 - 1230 + 319 for b.

A: -5

Q: Solve:
Solve -107 = 109*a - 726 - 471 for a.

A: 10

Q: Solve:
Solve -143*k + 33 - 176 = 0 for k.

A:
-1