Question

Вычислить
2*(12/25:6/5)=
14/15:2/3*10/21=
2/3*3/4*4/5*5/6=

Answer 1

$2*(\frac{\frac{12}{25} }{\frac{6}{5} } )=2*\frac{12}{25}*\frac{5}{6} =2*\frac{2}{5}=\frac{4}{5}$

$\frac{\frac{14}{15} }{\frac{2}{3} } *\frac{10}{21} =\frac{14}{15}*\frac{3}{2} *\frac{10}{21}=\frac{7}{5}*\frac{10}{21}=\frac{2}{3}$

$\frac{2}{3} }*\frac{3}{4} *\frac{4}{5} *\frac{5}{6}=\frac{1}{3}\\ 1) \frac{2}{3} }*\frac{3}{4}=\frac{1}{2} \\2)\frac{1}{2}*\frac{4}{5}=\frac{2}{5}\\3)\frac{2}{5}*\frac{5}{6}=\frac{1}{3}$

Пошаговое объяснение: