Solve -1112*b - 25115 - 3890 = 4355 for b.
Solve this plz.

A: -30

Solve 14*o + 13*o - 9*o + 306 = 0 for o.
Solve this plz.

A: -17

Solve 0 = -1658*n + 1659*n + 1 for n.
Solve this plz.

A:
-1