Solve -50*h + 12 = -56*h for h.
Solve this plz.

A: -2

Solve 87*s - 15 = 92*s for s.
Solve this plz.

A: -3

Solve 99*k + 2998 = -114*k - 1262 for k.
Solve this plz.

A:
-20