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December 21, 2014

December 21, 2014

Posted by **zandile** on Thursday, March 7, 2013 at 2:43pm.

- math -
**Steve**, Thursday, March 7, 2013 at 3:30pm10/2(2a+9d) = 145

a+3d + a+8d = 5(a+2d)

a=1

d=3

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