Q: What is the solution?
Solve -766*l = 979*l - 476*l - 1089 + 18855 for l.

A: -14

Q: What is the solution?
Solve -9 + 9 = -54*u for u.

A: 0

Q: What is the solution?
Solve 2*u = -9*u for u.

A:
0