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1. \(\dfrac{6}{24}=\dfrac{1\cdot 6}{4\cdot 6}=\) [ ];

2. \(\dfrac{40}{120}=\) [ ] \(=\) [ ];

3. \(\dfrac{13}{91}=\) [ ] \(=\) [ ];

4. \(\dfrac{22}{88}=\) [ ] \(=\) [ ];

5. \(\dfrac{19}{57}=\) [ ] \(=\) [ ].