Solve 21053*s - 21074*s = 378 for s.
Solve this plz.

A: -18

Solve 194*o + 147*o + 4768 = 555*o - 65*o for o.
Solve this plz.

A: 32

Solve -3470*s - 4742*s - 32848 = 0 for s.
Solve this plz.

A:
-4