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March 30, 2015

March 30, 2015

Posted by **jill** on Friday, September 30, 2011 at 10:05am.

- math -
**Steve**, Friday, September 30, 2011 at 12:06pmb + 12a = 3105

b + 7a = 1980

5a = 1125

a = 225

b = 405

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