Q: What is the solution?
Solve 285*t = 441*t + 156 for t.

A: -1

Q: What is the solution?
Solve 3*l + 0 - 3 = 0 for l.

A: 1

Q: What is the solution?
Solve 228*l + 19 = 209*l for l.

A:
-1