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2014-05-14T22:40:19+03:00
Ma= (a+b)/2= 102,5
a+b=102,5*2
a+b=205

a/b= 64/100= 32/50= 16/25
a=16b/25

16b/25 +b= 205  aducem la acelasi numitor
16b+25b=5125
41b=5125
b=125
a=205-125
a=80
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