Q: Solve:
Solve -1808 + 969 = -200*r + 2561 for r.

A: 17

Q: Solve:
Solve 1347*b - 670*b + 1363 = 724*b for b.

A: 29

Q: Solve:
Solve 46*s + 208 + 68 = 0 for s.

A:
-6