Solve -13*s + 8*s = -118 + 68 for s.
Solve this plz.

A: 10

Solve 0 = 40*c - 502*c - 1062*c + 46952 + 292 for c.
Solve this plz.

A: 31

Solve -104*z = 161*z - 311*z + 644 for z.
Solve this plz.

A:
14