Q: What is the solution?
Solve -8920*x = -8912*x + 88 for x.

A: -11

Q: What is the solution?
Solve -3*r - 2 = -29 - 3 for r.

A: 10

Q: What is the solution?
Solve 13*u - 5*u = -12*u + 40 for u.

A:
2