Q: Solve:
Solve 171*u - 13752 - 16104 = -10191 for u.

A: 115

Q: Solve:
Solve -6126 = -19*s - 6354 for s.

A: -12

Q: Solve:
Solve 209*b + 182*b + 21571 = 5149 for b.

A:
-42