Solve -3*x = -7*x + 12 for x.
Solve this plz.

A: 3

Solve 48*p + 41*p = -3*p + 1104 for p.
Solve this plz.

A: 12

Solve -90*i = -447 - 453 - 540 for i.
Solve this plz.

A:
16