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Daca a/b = 0,(6) atunci a + b / b-a






Răspuns :

a/b=0,(6)=6/9=2/3+>a=2b/3
(a+b)/(b-a)=(2b/3+b)/(b-2b/3)=(5b/3)/(b/3)=(5b*3)/3b=15b/3b=5