You can put this solution on YOUR website! Here's a couple hints:
(hint #1) do the easy work before and after this step
-2y = -8
to get to the answer of
y = 4
(hint #2) requiring "show all work" (when it's already required on this site) reveals to all that you're just looking for other people to do your very easy work.
The work left out is very basic multiplication and addition, which we believe you can do if you just try.