Упрости дробь и заполни пропуски \dfrac{\dfrac{1}{8}}{1-\dfrac{3}{8}}= \dfrac{1}{8}: =\dfrac{1}{8}~ \mathrlap{\:\cdot} . \dfrac{a-\dfrac{1}{a}}{\dfrac{1}{a}+1}= \mathrlap{\::} \mathrlap{\:=} . \dfrac{\dfrac{1}{x}+\dfrac{1}{y}}{\dfrac{1}{xy}}= .

Задание

Упрости дробь и заполни пропуски

\(\dfrac{\dfrac{1}{8}}{1-\dfrac{3}{8}}=\) \(\dfrac{1}{8}:\) [ ] \(=\dfrac{1}{8}~\) \(\mathrlap{\:\cdot}\) [ ][ ].
\(\dfrac{a-\dfrac{1}{a}}{\dfrac{1}{a}+1}=\) [ ] \(\mathrlap{\::}\) [ ] \(\mathrlap{\:=}\) [ ][ ].
\( \dfrac{\dfrac{1}{x}+\dfrac{1}{y}}{\dfrac{1}{xy}}=\) [ ].