Solve 311 = -2*g + 317 for g.
Solve this plz.

A: 3

Solve 7*i = 54*i - 475*i - 387*i + 34230 for i.
Solve this plz.

A: 42

Solve 575*r + 861*r + 2202 = 12254 for r.
Solve this plz.

A:
7