CPM Homework Help : MC1 Problem 2-78

What happens if Cecil goes any number of feet in one direction and then goes the same number of feet the other direction? Where does he end up? How do you know?

Hint

If you are having trouble with this problem, try it yourself.
Take $3$ steps away from where you are, then turn around and take $3$ steps back.
Where do you end up?
Try this with a different number of steps. Where do you end up?