Problem: Math Problem
Solve 406*a - 361*a = 90 for a.

A: 2

Problem: Math Problem
Solve 25*f - 223*f + 4620 = 33*f for f.

A: 20

Problem: Math Problem
Solve 1137*z + 13916 + 12609 - 4922 = 0 for z.

A:
-19