Предмет: Математика, автор: gacha1club

спасибо<3 спасибо<3 спасибо<3 спасибо<3

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Автор ответа: wieslawlozickip5w1nd

Ответ:

Пошаговое объяснение:

1/b=1/c -1/a

1/b=(a-c)/ca

b=ca/(a-c)

OTBET: (2)

gacha1club: спасибо

Автор ответа: manyny06

Ответ:

решение смотри на фотографии

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