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April 16, 2014

April 16, 2014

Posted by **Angela** on Sunday, November 6, 2011 at 9:24pm.

write an equivalent expression

(r+st)+ 8

- ALGEBRA -
**Ms. Sue**, Sunday, November 6, 2011 at 9:28pm8 + (st + r)

http://www.mathsisfun.com/associative-commutative-distributive.html

http://www.khanacademy.org/v/associative-law-of-addition?p=Developmental%20Math

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