Q: What is the solution?
Solve -2*l = 7*l - 36 for l.

A: 4

Q: What is the solution?
Solve -68*v + 590 = -812*v - 8338 for v.

A: -12

Q: What is the solution?
Solve -186 + 7746 = -3729*u + 1209*u for u.

A:
-3