Q: What is the solution?
Solve -16*s = -105 + 57 for s.

A: 3

Q: What is the solution?
Solve 25 - 37 = 3*s for s.

A: -4

Q: What is the solution?
Solve 25*y - 2322 - 318 = 245*y for y.

A:
-12