Q: What is the solution?
Solve -4*s = -3*s - 2*s for s.

A: 0

Q: What is the solution?
Solve -13770*x = -13974*x - 1428 for x.

A: -7

Q: What is the solution?
Solve -120*t + 261 - 861 = 0 for t.

A:
-5