Solve 3*i = 6*i + 6 for i.
Solve this plz.

A: -2

Solve -163*k + 160*k - 6 = 0 for k.
Solve this plz.

A: -2

Solve 143*s + 495 = 81*s + 77*s for s.
Solve this plz.

A:
33