Предмет: Математика, автор: asad228u

пожалуйста нужно срочно

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Ответы

Автор ответа: MuNuKoTu

1

Б) х=3
Д) х=-35/6
Пошаговое объяснение:
Б) х/5+х/4=1 7/20
х/5+х/4=27/20
4х+5х=27
9х=27
х=3
Д) 5х/7-7х/5=4
25х-49х=140
-24х=140
х=-35/6

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