Solve 42*n - 442*n - 7135 = -1135 for n.
Solve this plz.

A: -15

Solve 355 = -336*i - 286*i + 551*i for i.
Solve this plz.

A: -5

Solve 330 = -104*v + 760 + 633 + 185 for v.
Solve this plz.

A:
12