If i had 2 apples and my friend gave me 4 more so i gave him 3 back how many apples are there?

You have 2 apples.

Your friend gives you 4 more apples.

You now have 6 apples.

You give back 3 apples to your friend.

You now have 3 apples.

There are a total of 6 apples, of which you have 3, and your friend has 3.

So if I have 2 apples (me=2)
my friend gave me 4 more (me+4=2+4, me now=6)
so I gave him 3 back (lost 3) (me now-3=6-3, me now=3)
you end up with 3 apples

but,
the question is how many apples are there
find the biggest number
it is 6
there are at least 6 apples (but you end up with 3)