Q: Solve:
Solve 0 = -153752*c + 154164*c - 7828 for c.

A: 19

Q: Solve:
Solve -71529 = -346*r - 29663 for r.

A: 121

Q: Solve:
Solve 44331 + 74473 = -1348*r - 2090*r - 805*r for r.

A:
-28