Solve -9*f - 6 + 42 = 0 for f.
Solve this plz.

A: 4

Solve 10*x - 275 = -177 + 44 + 328 for x.
Solve this plz.

A: 47

Solve 200*q = 109*q + 3913 for q.
Solve this plz.

A:
43