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11/7+13/5*1/3-3/7:3 1/3

Răspuns :

11/7 + 13/15 - 3/7 : 10/3 = 11/7 + 13/15 - 9/70 = 110/70 - 9/70 + 13/15 = 101/70 + 13/15 = 303/210 - 182/210 = 121/210