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August 31, 2014

August 31, 2014

Posted by **Linda** on Friday, December 4, 2009 at 2:30am.

- algebra -
**Linda**, Friday, December 4, 2009 at 2:37amI know how they got 21 by adding 9 and tewnty ine but I dont know where the 45 camefrom,I know 9/15 + 12/15, but how did the 45 get in there?

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