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Mathematics, 07.12.2021 02:00 clarkster112679

This is a super easy third grade question i just don't know what property it's talking about 12. 42 + 45 = 87 and 45 + 42 = 87,
explain why this pattern happens?
Which property does it prove?

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This is a super easy third grade question i just don't know what property it's talking about 12. 4...

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