Answer:
y = -x/2 -3
Explanation:
So there are LOTS of ways you can choose to do this, but this is how i do it:
I like to move all the x to one side first, so:
2y = -x -6
Then we have to divide everything by 2 to get y on its own:
y = -x/2 -3
*you can divide first too if you want, i find that this keeps it nice and simple though
Hope this helped : )