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The associative property of addition states that changing the grouping of three or more addends does not change the sum.
For example:
(3 + 4) + 2 = 7 + 2 = 9
Alternatively,
3 + (4 + 2) = 3 + 6 = 9
In both cases, the sum is 9. Thus, the associative property of addition is demonstrated as the sum remains the same regardless of the grouping.