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2014-05-21T00:16:26+03:00
A+b+c=62
a=2b/5⇒  5a=2b⇒b=5a/2
a=3c/5⇒  5a=3c⇒ c=5a/3
inlocuim
a+5a/2+5a/3=62
(6a+15a+10a)/6=62
31a/6=62
a=62·6/31
a=12
b=5a/2=5·12/6
b=30
c=5a/3=5·12/6
c=20
12+30+20=62