Предмет: Математика, автор: serdiuchenkom719

Пожалуйста помогите даю 100б

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Автор ответа: iramazurk

1

Пошаговое объяснение:

(3х + 1)/10 = 11/5

5 * (3х + 1) = 11 * 10

15х + 5 = 110

5х = 110 - 5

5х = 105

х = 105 : 5

х = 21

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