Solve 0 = -16*v - 19*v + 40*v + 155 for v.
Solve this plz.

A: -31

Solve -370*o + 6448 = 270*o + 166*o for o.
Solve this plz.

A: 8

Solve 689 - 89 = 75*u for u.
Solve this plz.

A:
8