Final answer:
The commutative property of addition states that the order of numbers can be changed without changing the sum in an addition equation.
Step-by-step explanation:
The property shown in the equation 13 + 4 = 4 + 13 is the commutative property of addition.
This property states that when adding two numbers, the order of the numbers can be changed without changing the sum.
In this case, whether we add 13 and 4 or 4 and 13, the sum will be the same, which is 17.
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