Solve -80*s + 87*s - 56 = 0 for s.
Solve this plz.

A: 8

Solve 0 = -20*q - 6 + 6 for q.
Solve this plz.

A: 0

Solve 81*n = -37*n - 29*n - 882 for n.
Solve this plz.

A:
-6