Solve -67*n = 69*n + 222*n - 12172 for n.
Solve this plz.

A: 34

Solve 42 = 6*u + 41 + 31 for u.
Solve this plz.

A: -5

Solve -5475*l + 5424*l = 408 for l.
Solve this plz.

A:
-8