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Mathematics, 18.09.2019 04:00 yennie123

Idon't understnad this .
*d • r = r • d ? ?
a.)commutative property of multiplication
b.)identity property of multiplication
c.)zero property of multiplication
d.)commutative property of addition

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Idon't understnad this .
*d • r = r • d ? ?
a.)commutative property of multiplication
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