Solve -129 + 249 = 20*x for x.
Solve this plz.

A: 6

Solve -31*w + 199 = -43*w - 56*w - 1025 for w.
Solve this plz.

A: -18

Solve -209*w = -883*w - 25612 for w.
Solve this plz.

A:
-38