Mathematics, 10.05.2021 05:20 sidney2602

5. Maria writes the expression below. 21 + 3 + 6 + 9 − 3
Which expression could be shown to be equivalent to Maria's expression based on the commutative property of addition?

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5. Maria writes the expression below. 21 + 3 + 6 + 9 − 3
Which expression could be shown to...