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6 December, 01:34

Number sentence commutative property of addition 3+9=12

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  1. 6 December, 01:43
    0
    3+9=12 and 9+3=12

    you can change the order and not change the answer
  2. 6 December, 02:03
    0
    9+3 ←commutative property of 3+9
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