Solve 183 = 9*f + 192 for f.
Solve this plz.

A: -1

Solve -475*r + 1131 - 1835 = -9254 for r.
Solve this plz.

A: 18

Solve -6246*n = -3085*n - 3420*n + 11914 for n.
Solve this plz.

A:
46