Solve -10*z - 11*z = 21 for z.
Solve this plz.

A: -1

Solve 601*q + 5389 - 2061 = 185*q for q.
Solve this plz.

A: -8

Solve -185*f = -156*f - 97 - 48 for f.
Solve this plz.

A:
5