Предмет: Математика, автор: nikitatrofimov677

представьте в виде дроби выражение a/b-3/7.даю 15 балов

Ответы

Автор ответа: olgute747

Ответ:

Числитель: 7а-3b

Знаменатель: 7b

Пошаговое объяснение:

приводим к общему знаменателю 7*b, затем перемножаем то, что в числителях а*7 и 3*b, между ними знак минус

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