Q: What is the solution?
Solve -6*f = -15 - 3 for f.

A: 3

Q: What is the solution?
Solve 44*l - 74*l + 48 = -42*l for l.

A: -4

Q: What is the solution?
Solve -87*h - 4974*h - 86037 = 0 for h.

A:
-17