Question

Name the property indicated in the following:
$315+115=430$

Answer 1

We know that for some integers $a$ and $b$, if $a+b$ is also an integer then the set of integers is said to be closed under the operation of addition.

Here, both $315$ and $115$ are integers. Also, the addition of $315$ and $115$ is $430$ which is also an integer.

Hence, $315+115=430$ satisfies the closure property of addition.