Автор - ruban29052015

(1 9/16 × 3 1/5 + 6 2/3 - 9 : 2 2/5) : (17 7/12 - 6 1/3)

Ответ

Автор - MashaBaggins
1) 1 frac{9}{16}*3 frac{1}{5}  =  frac{25*16}{16*5}= 5
2) 9:2 frac{2}{5}= 9:2,4=3,75
3) 5+6 frac{2}{3} =11 frac{2}{3}
4) 11 frac{2}{3}- 3,75= 11frac{2}{3}-3 frac{3}{4}= frac{35}{3}- frac{15}{4}= frac{140-45}{12}   =  frac{95}{12} = 7 frac{11}{12}
5) 17 frac{7}{12}- 6 frac{1}{3}= frac{211-76}{12}   =  frac{135}{12} = frac{45}{4} = 11 frac{1}{4}
6) 7 frac{11}{12}:11 frac{1}{4}= frac{95*4}{12*45}   =  frac{19*1}{3*9}= frac{19}{27}
Ответ:  frac{19}{27}

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