Răspunsuri

2014-08-25T10:51:25+03:00
(x+y+z)/3=2.2 rezulta x+y+z=6.6
(x+y)/2=1.15 rezulta x+y=2.3
 Deci z=6.6-2.3=4.3
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2014-08-25T10:52:53+03:00