Автор - mariiishaa

вычеслите (4/5+4/7) (3 3/8+2 11/4)​

Ответ

Автор - anywaythanks

 (frac{4}{5}  +  frac{4}{7} )(3 frac{3}{8}  + 2 frac{11}{4} ) = ( frac{28 + 20}{35} )(5 frac{3  + 22}{8} ) =  frac{48 times 65}{35 times 8}  =  frac{6 times 13}{7}  =  frac{78}{7}

Ответ

 frac{78}{7}

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