Q: What is the solution?
Solve -87*q + 67*q + 60 = 0 for q.

A: 3

Q: What is the solution?
Solve 0 = -7*a - 20 - 15 for a.

A: -5

Q: What is the solution?
Solve -61*l + 52*l + 630 = -24*l for l.

A:
-42