Solve -4*u + 217*u + 1025 = -2809 for u.
Solve this plz.

A: -18

Solve 8*y = -9 - 31 for y.
Solve this plz.

A: -5

Solve 1930*o - 533 = 1889*o for o.
Solve this plz.

A:
13