Solve -8120*w + 8127*w + 126 = 0 for w.
Solve this plz.

A: -18

Solve -7*w = 3*w - 3 + 33 for w.
Solve this plz.

A: -3

Solve 1023*s = 1030*s + 49 for s.
Solve this plz.

A:
-7