Solve 0 = 87531*f - 87503*f - 924 for f.
Solve this plz.

A: 33

Solve 16548*d - 16665*d = 3276 for d.
Solve this plz.

A: -28

Solve 87*p - 220 = 36*p - 4*p for p.
Solve this plz.

A:
4