Solve -17*s - 102 = 17*s + 68 for s.
Solve this plz.

A: -5

Solve 18*m - 14*m = 20 for m.
Solve this plz.

A: 5

Solve 285 = 176*c - 160*c + 733 for c.
Solve this plz.

A:
-28