Solve 6*i + 138 - 150 = 0 for i.
Solve this plz.

A: 2

Solve -j = -6*j - j - 2*j for j.
Solve this plz.

A: 0

Solve 0 = 189*i + 268*i - 2464 + 2440 + 9621 for i.
Solve this plz.

A:
-21