If a + r = r + a = then the property used w.r.t addition is ?

Associated

Closer

Communicative

Distributive

The property used in the equation a + r = r + a is the commutative property of addition.

This property states that the order in which numbers are added does not affect the sum.

In other words, if you have two numbers, 'a and 'r', adding 'a' to 'r' will result in the same answer as adding 'r' to 'a'.