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Автор - koipova13012006

Срооооочно,помогите

Ответ

Автор - Also1987

Ответ:

Объяснение:

1 А)-1/9; Б)а/3b; В)-3у/(2у+10)

2 (-4с^3×b^6)/54

3 (6y^2×z^2)/x

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