Solve -4*u + 16 = -8*u for u.
Solve this plz.

A: -4

Solve -3091 = 86*w + 122*w + 9373 - 2480 for w.
Solve this plz.

A: -48

Solve s + 29*s + 40*s = -770 for s.
Solve this plz.

A:
-11