Solve -105 = 54*w - 142*w + 511 for w.
Solve this plz.

A: 7

Solve -157551*a = -157500*a + 1275 for a.
Solve this plz.

A: -25

Solve 36*g = 33*g - 57 for g.
Solve this plz.

A:
-19