Автор - xuickm

Даю 20 баллов за ответ

Ответ

Автор - oksik1970

Ответ:

frac{123}{226}   :

 frac{10.1 - (4 frac{ 2 }{5}  - 2 frac{1}{2}) }{4 + (3.2 + 2 frac{1}{3}) times 2 }  =  frac{123}{226}   : \  \ 1) : 4 frac{ 2 }{5}  - 2 frac{1}{2} = 2 frac{4 - 5}{10}  = 2 -  frac{1}{10}  = 1 frac{10 - 1}{10}  = 1 frac{9}{10}  = 1.9 \ 2) : 10.1 - 1.9 = 10 frac{1}{10}  - 1 frac{9}{10}  = 9 frac{1 - 9}{10}  = 9 -  frac{8}{10}  = 8 frac{2}{10}  = 8.2 \ 3) : 3.2 + 2 frac{1}{3}  = 3 frac{1}{5}  + 2 frac{1}{3}  = 5 frac{3 + 5}{15}  = 5 frac{8}{15}  \ 4) : 5 frac{8}{15}  times 2 = 10 frac{16}{15}  = 11 frac{1}{15}  \ 5) : 4 + 11 frac{1}{15}  = 15 frac{1}{15}  \ 6) : 8 frac{2}{10}  div 15 frac{1}{15}  = 8 frac{1}{5}  times  frac{15}{226}  =  frac{41 times 15}{5 times 226}  =  frac{123}{226}

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