Solve 0 = 41*g - 74*g + 64*g - 496 for g.
Solve this plz.

A: 16

Solve 17300*f = 17250*f - 1100 for f.
Solve this plz.

A: -22

Solve 39*r - 42*r = -9 for r.
Solve this plz.

A:
3