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9.Calculati : (7/8-1/8):(21/28+15/28)=​

Răspuns :

Răspuns:

6/8 : 36/28 = 3/4 : 9/7 = 3/4 * 7/9 = 7/12

Răspuns:

6/8:6/28=6×28/8×6=28/8=7/2