Q: What is the solution?
Solve -57*r + 619 - 505 = 0 for r.

A: 2

Q: What is the solution?
Solve -247*w + 61103 - 74405 = 93*w + 399*w for w.

A: -18

Q: What is the solution?
Solve 166*b - 1185 = 7447 for b.

A:
52