Заполни пропуски

Сравни дроби, приведя их к общему знаменателю:

а) \(\dfrac{-6}{7} \gt \dfrac{-19}{21}\) , так как \(\dfrac{^{3/}-6}{7} = \dfrac{-18}{21}\) и \(\dfrac{-18}{21} \gt \dfrac{-19}{21}\) ;

б) \(\dfrac{3}{4}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{13}{20}\) , так как \(\dfrac{3}{4}=\) [ ] и [ ][ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{13}{20}\) ;

в) \(\dfrac{-13}{25}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{-2}{5}\) , так как \(\dfrac{-2}{5}=\) [ ] и [ ][ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{-13}{25}\) ;

г) \(\dfrac{-7}{24}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{-3}{8}\) , так как \(\dfrac{-3}{8}=\) [ ] и [ ][ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{-7}{24}\) ;

д) \(\dfrac{15}{49}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{2}{7}\) , так как \(\dfrac{2}{7}=\) [ ] и [ ][ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{15}{49}\) ;

е) \(\dfrac{-13}{18}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{-7}{6}\) , так как \(\dfrac{-7}{6}=\) [ ] и [ ][ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{-13}{18}\) ;

ж) \(\dfrac{-19}{48}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{-7}{16}\) , так как \(\dfrac{-7}{16}=\) [ ] и [ ][ \(\gt\) | \(\lt\) | \(=\) ] \(\dfrac{-19}{48}\) .