Solve 2970*q + 393915 = -122779 + 121684 for q.
Solve this plz.

A: -133

Solve 2 = -10*x + 9*x for x.
Solve this plz.

A: -2

Solve -156*q = -123*q + 170 + 61 for q.
Solve this plz.

A:
-7