Solve -1320278*c = -1320234*c + 1396 - 76 for c.
Solve this plz.

A: -30

Solve 217*b - 118*b = -693 for b.
Solve this plz.

A: -7

Solve 34*s - 5*s = -4*s - 660 for s.
Solve this plz.

A:
-20