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2014-05-03T15:45:26+03:00
{a,b,c} d.p. {2,5,8}   ;2a+15b=158
 \frac{a}{2} =k⇒a= \frac{k}{2}
 \frac{b}{5} =k⇒b= \frac{k}{5}
 \frac{c}{8} =k⇒c= \frac{k}{8}
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