Q: What is the solution?
Solve -482274*r + 6351 = -482493*r for r.

A: -29

Q: What is the solution?
Solve 142*d + 423127 - 417873 = 0 for d.

A: -37

Q: What is the solution?
Solve -16*c + 3326 - 3102 = 0 for c.

A:
14