Q: What is the solution?
Solve -126*i + 33183 = 37971 for i.

A: -38

Q: What is the solution?
Solve -349 = -71*m - 331 - 1509 for m.

A: -21

Q: What is the solution?
Solve 172*r + 52 = -144 - 1180 for r.

A:
-8