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2014-11-09T18:58:30+02:00
A+b+c=7500
a+b=5750
b+c=4958
a+(b+c)=7500
a+4958=7500
a=2542
(a+b)+c=7500
5750+c=7500
c=1750
2542+b+1750=7500
b+4292=7500
b=3208
 a=2542 b=3208 c=1750