Solve 972800*f = 1945770*f - 972835*f + 9180 for f.
Solve this plz.

A: -68

Solve 12*p + 483042 - 483246 = 0 for p.
Solve this plz.

A: 17

Solve -251808 = -1929*w - 836*w - 25078 for w.
Solve this plz.

A:
82