Solve 44*c - 315*c + 8401 = 0 for c.
Solve this plz.

A: 31

Solve 0 = 9*h - 8*h - 5 for h.
Solve this plz.

A: 5

Solve 1900 = -576*f + 481*f for f.
Solve this plz.

A:
-20