Q: Solve:
Solve -87*r - 17001 = -10824 for r.

A: -71

Q: Solve:
Solve 1232*r + 3730*r + 15282 + 14436 = 9*r for r.

A: -6

Q: Solve:
Solve -101*r - 572 = -35*r + 154 for r.

A:
-11