Solve 1285*r + 185*r + 7484 = 264*r + 40046 for r.
Solve this plz.

A: 27

Solve 12*l = -8*l + 2*l for l.
Solve this plz.

A: 0

Solve -289 - 827 = 186*s for s.
Solve this plz.

A:
-6