Solve 0 = -298*f + 2889*f + 199507 for f.
Solve this plz.

A: -77

Solve -20*x + 454 - 414 = 0 for x.
Solve this plz.

A: 2

Solve 0 = 16*p - 26*p + 20 for p.
Solve this plz.

A:
2