Solve -85*w + 90 = -152*w + 85*w for w.
Solve this plz.

A: 5

Solve 46*f - 43*f = -9 for f.
Solve this plz.

A: -3

Solve -3*b + 248 = -55*b - 272 for b.
Solve this plz.

A:
-10