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April 20, 2014

April 20, 2014

Posted by **michael** on Monday, February 4, 2013 at 8:27am.

- algebra -
**Reiny**, Monday, February 4, 2013 at 8:55am5r+5s-8(4r-9s)

= 5r+5s - 32r + 72s

= 77s - 27r

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