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August 21, 2014

August 21, 2014

Posted by **Jessica** on Sunday, February 6, 2011 at 7:08pm.

please help. if you could help me figure out how to solve it that would be great. thanks (:

- MATH -
**bobpursley**, Sunday, February 6, 2011 at 7:36pmA+7-4=R

but R=A/2 think about that.

A+3=A/2

A=6 steps. so the stair case has 6+7+4

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