Q: What is the solution?
Solve -10*u + 12*u = 0 for u.

A: 0

Q: What is the solution?
Solve -2434*s = -2441*s + 21 for s.

A: 3

Q: What is the solution?
Solve 0 = -1015*s + 48*s + 13538 for s.

A:
14