Пошаговое объяснение:
5 13/15 + 1 7/12 = (5 + 1) + (13/15 + 7/12) =
= (приводим дроби к общ. знаменателю 60) =
= 6 + (13*4/60 + 7*5/60) =
= 6 + (52/60 + 35/60) = 6 + 87/60 =
= 6 + 1 27/60 = 6 + 1 9/20 = 7 9/20,
1 - 9/11 = 11/11 - 9/11 = 2/11
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Пошаговое объяснение:
5 13/15 + 1 7/12 = (5 + 1) + (13/15 + 7/12) =
= (приводим дроби к общ. знаменателю 60) =
= 6 + (13*4/60 + 7*5/60) =
= 6 + (52/60 + 35/60) = 6 + 87/60 =
= 6 + 1 27/60 = 6 + 1 9/20 = 7 9/20,
1 - 9/11 = 11/11 - 9/11 = 2/11