Q: Solve 131*c = -10*c + 423 for c.

A: 3

Q: Solve -16949*u - 5488 = -16851*u for u.

A: -56

Q: Solve -370 + 361 = -3*q for q.

A: 3

Q: Solve -684*s - 315*s - 20966 = 21991 for s.

A:
-43