5 + 2 is 7
2 + 5 is 7
The reason why the sum of them both are 7, is because switching the numbers in simple addition around does not make a difference.
(Ex: If you has 5 apples and then added 2 apples to them, it would be the same if you had 2 apples and added 5 apples to them. You would still end up with 7 apples)
