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September 18, 2014

September 18, 2014

Posted by **Candice** on Monday, April 1, 2013 at 11:58am.

- algebra -
**Steve**, Monday, April 1, 2013 at 12:10pmcommutative and associative

27 + 15 + 3 + 5

= 27 + 3 + 15 + 5

= 30 + 20

= 50

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