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April 20, 2014

April 20, 2014

Posted by **garrett** on Thursday, November 17, 2011 at 11:51am.

17 + (45 + 23)

17 + (23 + 45)

(17 + 23) + 45

40 + 45

85

- algebra -
**Ms. Sue**, Thursday, November 17, 2011 at 11:52amhttp://www.mathsisfun.com/associative-commutative-distributive.html

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