Solve 9*k + 3 - 21 = 0 for k.
Solve this plz.

A: 2

Solve 19 = -353*i + 354*i + 48 for i.
Solve this plz.

A: -29

Solve -35*k + 117*k + 172 = 664 for k.
Solve this plz.

A:
6