Solve -91 = 53*w + 40*w - 80*w for w.
Solve this plz.

A: -7

Solve -3*z - 1018 = -1036 for z.
Solve this plz.

A: 6

Solve 3*f - 10*f = 22*f + 58 for f.
Solve this plz.

A:
-2