Q: What is the solution?
Solve -7423*s + 7442*s = -57 for s.

A: -3

Q: What is the solution?
Solve 98*p + 87*p - 192*p - 44974 = -405*p for p.

A: 113

Q: What is the solution?
Solve -21 = 94*l + 73 for l.

A:
-1