Предмет: Алгебра, автор: ggjg3378

срочно!!!!!!!!!!!!!!!!!!!!!!!!

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Автор ответа: Universalka

1

$\frac{3d^{2} }{d^{2}-49 }:\frac{3d}{d+7}=\frac{3d^{2}}{(d+7)(d-7)} *\frac{d+7}{3d} =\boxed{\frac{d}{d-7}}$

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