Q: What is the solution?
Solve 0 = 263*l - 257*l - 18 for l.

A: 3

Q: What is the solution?
Solve -7*k + 5*k + 4 = 0 for k.

A: 2

Q: What is the solution?
Solve 0*m = 5*m - 25 for m.

A:
5