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Вычисли разность дробей с разными знаменателями:

а) \(\dfrac{1}{2}-\left(-\dfrac{3}{4}\right)=\) [ ];

б) \(-\dfrac{2}{3}-\dfrac{1}{6}=\) [ ];

в) \(-\cfrac{3}{8}-\left(-\cfrac{1}{3}\right)=\) [ ];

г) \(\cfrac{3}{11}-\cfrac{5}{12}=\) [ ];

д) \(\cfrac{1}{6}-\left(-\cfrac{2}{9}\right)=\) [ ];

е) \(-\cfrac{1}{24}-\cfrac{1}{16}=\) [ ];

ж) \(-\cfrac{3}{8}-\left(-\cfrac{1}{12}\right)=\) [ ];

з) \(\cfrac{5}{14}-\cfrac{11}{21}=\) [ ];

и) \(\cfrac{7}{24}-\left(-\cfrac{5}{36}\right)=\) [ ];

к) \(-\dfrac{2}{27}-\dfrac{7}{36}=\) [ ].