Solve -12 = -40*i - 292 for i.
Solve this plz.

A: -7

Solve -829 + 680 = 25*w + 124*w for w.
Solve this plz.

A: -1

Solve -1440*x - 93*x = 65531 + 28674 + 6973 for x.
Solve this plz.

A:
-66