Q: What is the solution?
Solve -9*n = -13*n for n.

A: 0

Q: What is the solution?
Solve -828*s = -3271*s + 73290 for s.

A: 30

Q: What is the solution?
Solve 242*t - 449*t + 223*t - 48 = 0 for t.

A:
3