Предмет: Математика, автор: anna26082003

Помогите пожалуйста Как привести дробь 21/28 к знаменателю 100

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Автор ответа: igir12370

0

сначала сократим дробь на 7, а потом уже приведем к знаменателю 100. 21/28=3/4=3*25/4*25=75/100; можно по другому:21/28=0,75=75/100

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