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2014-08-10T16:33:34+03:00
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A       M     P  B        N      C   

AB=2*AM=2*5=10

BC=MC-MP
BC=11-5
BC=6

AC=AB+BC=10+6=16

MP=AC/2= 16/2=8

NC=BN=BC/2=6/2=3

AP=PC=AC/2=16/2=8

NP=8-5
NP=3

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