Final answer:
The property in question is the Commutative Property of Addition, which states that the order of adding numbers doesn't affect the sum. The given equation is a perfect example of this, demonstrating that whether you add 2/9 to 9/11, or 9/11 to 2/9, the result is identical.
Step-by-step explanation:
The property of addition by which the numbers in an addition problem can be rearranged without changing the resulting sum is called the Commutative Property of Addition. The provided equation 2/9 + 9/11 = 9/11 + 2/9 is an example demonstrating this property. It states that you can add fractions in any order and the sum will still be the same. Therefore, whether you're adding 2/9 first and then 9/11, or 9/11 first and then 2/9, the result remains the same.
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