Solve 34*y + 63 = 13*y for y.
Solve this plz.

A: -3

Solve 56*y = -90*y + 3861 - 13789 for y.
Solve this plz.

A: -68

Solve 27433*k = 28813*k + 140760 for k.
Solve this plz.

A:
-102