Solve 31366 - 58622 = -70*f - 29916 for f.
Solve this plz.

A: -38

Solve 0 = 398*c - 396*c - 18 for c.
Solve this plz.

A: 9

Solve -91*w - 59 - 420 - 67 = 0 for w.
Solve this plz.

A:
-6