Автор - deer84

математика помогите пж​

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Проверено экспертом

Автор - kerimovaaliya36

 (frac{3}{4}  -  frac{4}{5}) + 7.8 - ( frac{2}{3}   +  frac{4}{7} ) times (  - frac{7}{13} ) =  -  frac{1}{20}  times  frac{39}{5}  -  frac{26}{21}  times ( -  frac{7}{13} ) =  -  frac{39}{100}  +  frac{2}{3}  =  frac{83}{300}

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