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The sum of 28+29+42=99. So what addition property was used Commutative, associative, identity, or distributive ?

The sum of 28+29+42=99. So what addition property was used Commutative, associative, identity, or distributive ?
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The sum of 28+29+42=99. So what addition property was used Commutative, associative, identity, or distributive ?

User Quantumboredom
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28 + 29 + 42 = 28 + 42 + 29 = 99

Commutative property: a + b = b + a

User Archarius
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