Solve -15*l - 13*l + 66*l = -67*l + 5775 for l.
Solve this plz.

A: 55

Solve 2*z = 6*z for z.
Solve this plz.

A: 0

Solve 451*s + 195*s - 4559 + 19417 = 0 for s.
Solve this plz.

A:
-23