Q: What is the solution?
Solve 14*w - 9*w = 20 for w.

A: 4

Q: What is the solution?
Solve 56*u + 968 - 1220 = 1540 for u.

A: 32

Q: What is the solution?
Solve 4 = -54*r + 58*r for r.

A:
1