Răspunsuri

2014-03-10T15:39:35+02:00
{a;b;c} d.p. {3;7;8}
a/3=b/7=c/8=k=>a=3k b=7k c=8k
c+12=a+b
8k+12=3k+7k
12=10k=8k=2k
k=12/2=6
a=3*6=18
b=7*6=42
c=8*6=48
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