Q: What is the solution?
Solve -22644*r + 22638*r + 48 = 0 for r.

A: 8

Q: What is the solution?
Solve 0 = -123*m + 131*m - 32 for m.

A: 4

Q: What is the solution?
Solve 7079 = -22*q + 7057 for q.

A:
-1