Question

Выполните действия а) 4/11-2/3 б) 9: (-1/3) в) 0,8-1/6 : (-1,2-0,6)

Answer 1

$\frac{4}{11} - \frac{2}{3} = \frac{4*3}{33} - \frac{2*11}{33} = \frac{12-22}{33} = - \frac{10}{33}$

$9: (-\frac{1}{3})= \frac{9}{1} *(- \frac{3}{1})=- \frac{27}{1}=-27$

$0,8- \frac{1}{6}:(- 1,2-0,6)= \frac{8}{10} - \frac{1}{6}:(- \frac{12}{10} - \frac{6}{10})= \frac{8}{10} - \frac{1}{6}:(- \frac{18}{10})=$$\frac{8}{10} - \frac{1}{6}*(- \frac{10}{18})=\frac{8}{10} - \frac{1}{3}*(- \frac{5}{18})=\frac{8}{10} +\frac{5}{54}= \frac{8*54+5*10}{540} =\frac{432+50}{540}=$$\frac{482}{540}=\frac{241}{270}$