Solve 20 = 37*s - 57*s for s.
Solve this plz.

A: -1

Solve -151*l = -11*l + 24 - 5484 for l.
Solve this plz.

A: 39

Solve 1293 = -237*k - 1788 for k.
Solve this plz.

A:
-13