Solve 5597 - 47792 - 3138 = -657*f for f.
Solve this plz.

A: 69

Solve -457*c - 1179 - 998 = 108 for c.
Solve this plz.

A: -5

Solve 26 = 8*o - 30 for o.
Solve this plz.

A:
7