Solve 0 = 14*p - 47 + 5 for p.
Solve this plz.

A: 3

Solve 25*p + 42 = 31*p for p.
Solve this plz.

A: 7

Solve 0 = -138*g - 858 + 3756 for g.
Solve this plz.

A:
21