Вычисли

а) \(\cfrac{^4/ \,1}{\,3}-\cfrac{^3/ \,1}{\,4}=\cfrac{4}{12}-\cfrac{3}{12}=\cfrac{1}{12}\) ;

б) \(\dfrac{^9/ \,4}{\,5}-\dfrac{^5/ \,2}{\,9}=\) [ ] \(-\) [ ] \(=\) [ ];

в) \(\dfrac{3}{5}-\dfrac{1}{8}=\) [ ] \(-\) [ ] \(=\) [ ];

г) \(\dfrac{4}{5}-\dfrac{7}{12}=\) [ ] \(-\) [ ] \(=\) [ ];

д) \(\dfrac{7}{8}-\dfrac{5}{9}=\) [ ] \(-\) [ ] \(=\) [ ];

е) \(\dfrac{8}{11}-\dfrac{2}{5}=\) [ ] \(-\) [ ] \(=\) [ ].