4/5 - 1/15 = 12/15 - 1/15 = 11/15
Ответ: 11/15.
Пояснения:
4/5 = (4·3)/(5·3) = 12/15 - доп. множ. 3
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4/5 - 1/15 = 12/15 - 1/15 = 11/15
Ответ: 11/15.
Пояснения:
4/5 = (4·3)/(5·3) = 12/15 - доп. множ. 3