Răspunsuri

2014-05-06T01:22:25+03:00
A+b+c=216 a=3(b+c) c-20=b a=3(c-20+c) a=3(2c-20) a=6c-60 6c-60+c-20+c=216 8c-80=216 8c=296 c=37 a=222-60=162 b=37-20=17
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