Q: What is the solution?
Solve -2*n + 624 = -602 + 1773 - 689 for n.

A: 71

Q: What is the solution?
Solve -7*r + 5*r = -12 for r.

A: 6

Q: What is the solution?
Solve -113*b - 17*b - 2612 = -3652 for b.

A:
8