Solve 191*s + 20*s = 72*s - 249*s - 8148 for s.
Solve this plz.

A: -21

Solve 5*t - 40 = -0 for t.
Solve this plz.

A: 8

Solve 8*z = -2*z - 30 for z.
Solve this plz.

A:
-3