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2014-09-25T14:38:55+03:00
A+b+c=220
b=a/2
c=a/3, adica a+a/2+a/3=220 |·6 (aducem la acelasi numitor) <=> 6a+3a+2a=1320 <=> 11a=1320 => a=120
b=a/2 => b=60
c=a/3 => c=40
120+60+40=220.
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