Problem: Math Problem
Solve 6912 = 3274*r + 195591 + 131653 - 68234 for r.

A: -77

Problem: Math Problem
Solve -1147*k - 135*k + 13958 = 10568 - 68402 for k.

A: 56

Problem: Math Problem
Solve 406 = -8*n + 329 + 221 for n.

A:
18