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cum se rezolva exercitiul 5\12 ori (1\2 + 5\6)

Răspuns :

5/12 x (1/2+5/6)=
5/12 x (3/6+5/6)=
5/12 x (8/6)=
5/12 x 4/3=
5/4 x1/3=5/12