Q: Solve:
Solve 569*c = -718*c - 19812 + 3081 for c.

A: -13

Q: Solve:
Solve 13617 = 188*s - 179*s - 276*s for s.

A: -51

Q: Solve:
Solve 94*k + 6996 = -254*k + 30*k for k.

A:
-22