Предмет: Математика, автор: ermolaevn1kita

Помогите пожалуйста с решением

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Ответы

Автор ответа: tatsach

1

Ответ:

Пошаговое объяснение:

1 1/3*(с-3/4)=0,4

1 1/3с-1=0,4

1 1/3с=0,4+1

1 1/3с=1,4

С=1,4:1 1/3=7/5*3/4

С=21/20=1 1/20

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