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What related number sentence shows the commutative property addition 3+9=12
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What related number sentence shows the commutative property addition 3+9=12

User MJP
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The related number sentence for that would be 9 + 3 = 12

Note, the commutative property of addition is
a + b = c
b + a = c

a + b = b + a
User Ben Allison
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