Solve -2518*a + 62967 - 130352 - 212113 = 0 for a.
Solve this plz.

A: -111

Solve -78*o + 96*o - 62*o + 704 = 0 for o.
Solve this plz.

A: 16

Solve -19742*u - 19728*u - 4144 = -39358*u for u.
Solve this plz.

A:
-37