Solve 79931*f = 79904*f + 54 for f.
Solve this plz.

A: 2

Solve 50*c - 308 = -58 for c.
Solve this plz.

A: 5

Solve 398*n - 5921 = -868*n + 1675 for n.
Solve this plz.

A:
6