Q: Solve:
Solve 0 = 159*b - 18516 + 18187 - 8575 for b.

A: 56

Q: Solve:
Solve -12599*u = -12458*u + 846 for u.

A: -6

Q: Solve:
Solve 5858*s - 21323 = -1774*s + 24469 for s.

A:
6