Question

Ответьте на эти 2 вопроса и объясните

Answer 1

Ответ:

Пошаговое объяснение:

$\frac{0,(5)+1\frac{5}{9} }{\frac{12}{90}-0,1(4) } = \frac{\frac{5}{9}+1\frac{5}{9} }{\frac{12}{90}-\frac{13}{90}} =\frac{1\frac{10}{9} }{-\frac{1}{90} }=\frac{\frac{19}{9} }{-\frac{1}{90} } = \frac{19}{9}*(-\frac{90}{1} )=-190\\ \\ otvet: -190$

$\frac{25}{7} :\frac{15}{14}-2:1\frac{1}{9} > (\frac{2}{7}+\frac{5}{21} )*2\frac{7}{11}$

$1)\frac{25}{7} :\frac{15}{14}= \frac{25}{7} *\frac{14}{15}=\frac{10}{3} \\ \\ 2)2:1\frac{1}{9} =2:\frac{10}{9} =2*\frac{9}{10} =\frac{9}{5} \\ \\ 3)\frac{10}{3} -\frac{9}{5} =\frac{50}{15}-\frac{27}{15}=\frac{23}{15}=1\frac{8}{15} \\ \\ otvet:1\frac{8}{15} \\ \\ \\ 4)\frac{2}{7}+\frac{5}{21}= \frac{6}{21}+\frac{5}{21}= \frac{11}{21} \\ \\ 5)\frac{11}{21} *2\frac{7}{11}= \frac{11}{21} *\frac{29}{11}= \frac{29}{21} = 1\frac{8}{21} \\ \\ otvet:1\frac{8}{21} \\ \\ 1\frac{8}{15} > 1\frac{8}{21}$