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2014-06-18T19:46:47+03:00
A+b=1

1/2 * a= 1/3 * b

a/2= b/3

a=2b/3

2b/3 +b=1  aducem la acelasi numitor

2b+3b=3

5b=3

b=3/5

a=2* 5/3 supra 3= 10/3/3=  10/3* 1/3=  10/9