Q: Solve:
Solve 0 = -150*n + 130*n + 120 for n.

A: 6

Q: Solve:
Solve -80*q - 5481 + 3948 - 8707 = 0 for q.

A: -128

Q: Solve:
Solve -24*s - 56 = 40 for s.

A:
-4