Автор - 5nappi

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Ответ

Автор - гюйс

       ............................................= 48

1);;;4frac{1}{3} -2,7=4frac{1}{3}-2frac{7}{10}= 4frac{10}{30}-2frac{21}{30}=3frac{40}{30}-2frac{21}{30}=1frac{19}{30} \ \ 2);;;5,6:1frac{19}{30}=frac{56}{10} :frac{49}{30} =frac{56}{10}*frac{30}{49}=frac{24}{7}=3frac{3}{7} \  \ 3);;;3frac{3}{7} +2frac{2}{3}= 3frac{9}{21} +2frac{14}{21} =5frac{23}{21} =6frac{2}{21} \ \ 4);;;6frac{2}{21}*7frac{7}{8} =frac{128}{21} *frac{63}{8} =16*3=48

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