Problem: Math Problem
Solve -7*r + 1245 = 2557 - 1102 for r.

A: -30

Problem: Math Problem
Solve 174*s = 75*s - 99*s + 3249 + 315 for s.

A: 18

Problem: Math Problem
Solve -33*h - 624 = -h + 20*h for h.

A:
-12