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Ответ

Ответ дан
Koleckin83

Ответ:

Пошаговое объяснение:

Ответ

Ответ дан
sumaya13q

Ответ:

-2frac{2}{7} = -2,2857142...

Пошаговое объяснение:

(-2,5+2frac{1}{3} ) * (5frac{1}{7} ) : 1frac{1}{3} = (-frac{25}{10} + frac{7}{3} ) * frac{36}{7} * frac{4}{3} = ( frac{-25*3}{10*3} + frac{7*10}{3*10}) * frac{12}{7} * frac{4}{1} = (frac{-75+70}{30} ) * frac{48}{7} = frac{-5}{30} * frac{48}{7} = frac{-5}{5} * frac{16}{7} = -1*frac{16}{7} = frac{-16}{7} = -2frac{2}{7}

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