Solve -2*w - 6*w + 0*w = -18*w - 150 for w.
Solve this plz.

A: -15

Solve -r - 22 = -19 for r.
Solve this plz.

A: -3

Solve -3*b + 13*b + 4*b = 9*b for b.
Solve this plz.

A:
0