Solve -280*n - 21189 = -7511 + 2992 + 13290 for n.
Solve this plz.

A: -107

Solve 4621*c = 2705 - 330796 for c.
Solve this plz.

A: -71

Solve 1013*z = 989*z - 16 - 56 for z.
Solve this plz.

A:
-3