Question 662245
That is an example of the commutative property of addition.
Commuting means changing, as in changing the death penalty to life in prison for a convicted criminal.
The commutative property for addition means that
when we add two numbers (or two algebraic expressions),
the result is the same, no mater which of the two we write before the plus sign,
and which one we write after the plus sign.
The order does not matter.