Solve 170 = -54*r + 8 for r.
Solve this plz.

A: -3

Solve 6264 = -2065*s + 1282*s for s.
Solve this plz.

A: -8

Solve 0 = -72*z - 6*z + 1950 for z.
Solve this plz.

A:
25