Solve 3525 + 4197 = 214*k + 215*k for k.
Solve this plz.

A: 18

Solve 246*h - 547414 = -337*h - 527592 for h.
Solve this plz.

A: 34

Solve 318*s = 1126*s + 3285 - 53 for s.
Solve this plz.

A:
-4