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Ответ дан
Chlorum1

displaystyle tt frac{16}{25}cdot (frac{2}{3}+frac{7}{14})-frac{9}{10}div frac{15}{16}=frac{16}{25}cdot frac{7}{6}-frac{9}{10}cdot frac{16}{15}=frac{8}{25}cdot frac{7}{3}-frac{3}{5}cdot frac{8}{5}=frac{56}{75}-frac{24}{25}=-frac{16}{75}

1) Раскрываем скобки;

2) Заменяем деление на умножение;

3) Сокращаем дроби;

4) Умножаем дроби;

5) Вычитаем дроби.

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