Problem: Math Problem
Solve 449 - 20 + 61 = 49*c for c.

A: 10

Problem: Math Problem
Solve 6345*r + 2511*r = 1808*r - 183248 for r.

A: -26

Problem: Math Problem
Solve 47559 - 14573 + 171799 = 5370*c + 725 for c.

A:
38