Q: What is the solution?
Solve 13*u + 291 - 44 = -130 for u.

A: -29

Q: What is the solution?
Solve -15*s - 4*s - 144 = -s for s.

A: -8

Q: What is the solution?
Solve 141*f = -19 + 19 for f.

A:
0