Solve -383*f - 2995 - 3899 = 0 for f.
Solve this plz.

A: -18

Solve 1152 = 538*x - 11222 for x.
Solve this plz.

A: 23

Solve 45*o + 599 - 235 = 1264 for o.
Solve this plz.

A:
20