(2,5-2 1/3)×(-5 1/7)+1 1/3÷(-5,6)

Ответ:

Пошаговое объяснение:

$1) 2,5-2\frac{1}{3} =\frac{25}{10} -\frac{7}{3} =\frac{75-70}{30} =\frac{5}{30} =\frac{1}{6} \\2)\frac{1}{6}*(-5\frac{1}{7} )=-\frac{1}{6} *\frac{36}{7} =-\frac{6}{7} \\3)1\frac{1}{3} :(-5.6)=-\frac{4}{3}:\frac{56}{10} =-\frac{4}{3}*\frac{10}{56} =-\frac{5}{21} \\4)-\frac{6}{7} -\frac{5}{21}=\frac{-18-5}{21}=-\frac{23}{21}=-1\frac{2}{21}$