Question

Найдите значение выражения
(2,5-2 1/3)×(-5 1/7)+1 1/3÷(-5,6)

Answer 1

$1)2 frac{1}{2} - 2 frac{1}{3} = 2 frac{3}{6} - 2 frac{2}{6} = frac{1}{6}$
$2) frac{1}{6} times ( - 5 frac{1}{7} ) = - frac{1}{6} times frac{36}{7} = - frac{6}{7}$
$3)1 frac{1}{3} div ( - 5 frac{3}{5} ) = frac{4}{3} times ( - frac{5}{28} ) = \ = - frac{5}{21}$
$4) - frac{6}{7} + ( - frac{5}{21} ) = - frac{18}{21} - frac{5}{21} = \ - frac{23}{21} = - 1 frac{2}{21}$