Solve 0 = -31*v + 2043 - 400 for v.
Solve this plz.

A: 53

Solve 4694*y - 4691*y = -120 for y.
Solve this plz.

A: -40

Solve 1562 + 1222 = -40*o - 82*o + 1808 for o.
Solve this plz.

A:
-8