Автор - njfb

4 7/8 разделить на 3,9=
Решите пож

Ответ

Автор - JuliaKovalchook
3,9=3 frac{9}{10}  \ 4 frac{7}{8} :3 frac{9}{10}  =frac{8*4+7}{8} : frac{3*10+9}{10}  =frac{39}{8} : frac{39}{10}  =frac{39}{8} * frac{10}{39}  =frac{39}{4*2} * frac{5*2}{39}  =frac{1}{4} * frac{5}{1} =  frac{5}{4} = \ =1,25

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