Solve 3466 = 29*b + 39*b - 2509 - 1097 for b.
Solve this plz.

A: 104

Solve 0 = -14*c - 59 - 25 for c.
Solve this plz.

A: -6

Solve -21*a - 30 = 75 for a.
Solve this plz.

A:
-5