Question

Найди значение выражения
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Answer 1

$\displaystyle\frac{3}{7}+8\frac{2}{3}-\frac{2}{21}=\frac{3}{7}+\frac{26}{3}-\frac{2}{21}=\frac{3*3+26*7-2}{21}=\frac{9+182-2}{21}=\frac{189}{21}=9$