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Найди разность.

1. \(\dfrac{4}{9}-\left(-\dfrac{1}{6}\right)=\) [ ];

2. \(-\dfrac{5}{8}-\left(-\dfrac{7}{10}\right)=\) [ ];

3. \(\dfrac{7}{12}-\dfrac{17}{18}=\) [ ];

4. \(-\dfrac{9}{20}-\dfrac{4}{15}=\) [ ];

5. \(\dfrac{3}{10}-\dfrac{8}{15}=\) [ ];

6. \(-\dfrac{11}{25}-\left(-\dfrac{3}{10}\right)=\) [ ].