Mathematics, 24.08.2019 22:30 Fireburntbudder

Which models the commutative (order) properly of addition? a. 7+6=13 b. 6+0=6 c. 5+9=9+5 d.(3+2)+8=3+(2+8)

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Which models the commutative (order) properly of addition? a. 7+6=13 b. 6+0=6 c. 5+9=9+5 d.(3+2)+8=...

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