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Maryoronny
a fost răspuns

efectueaza 4/9+3/9-5/9; (8/12-4/12)+(6/12-13/12)

Răspuns :

CarMina03
4/9+3/9-5/9=7/9-5/9=2/9
(8/12-4/12)+(6/12-13/12)=4/12+(-7/12)=-3/12=-1/4

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