Предмет: Математика, автор: Аноним

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Автор ответа: Аноним

$\displaystyle 2,5+3\frac{3}{4}:(-\frac{5}{8})=2,5+\frac{15}{4}:(-\frac{5}{8})=2,5-\frac{15}{4}*\frac{8}{5}=2,5-3*2=2,5-6=-3,5=-\frac{7}{2}=-3\frac{1}{2}$

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