Solve -12*s + 6 + 71 = -s for s.
Solve this plz.

A: 7

Solve -75*m + 8569 - 9094 = 0 for m.
Solve this plz.

A: -7

Solve 8*u + 7 + 1 = 0 for u.
Solve this plz.

A:
-1