Solve 278*z + 56684 = -991*z - 65140 for z.
Solve this plz.

A: -96

Solve -149*w - 9*w = 86*w - 70*w - 1392 for w.
Solve this plz.

A: 8

Solve -315900*u = -315846*u + 972 for u.
Solve this plz.

A:
-18