Выбери верные ответы

Зная, что \(\boldsymbol{a \gt b}\) , сравни выражения.

1. \(\dfrac{3a}{7}\) [ \(\gt\) | \(\lt\) ] \(\dfrac{3b}{7}\) .
2. \(0,6 - 2a\) [ \(\gt\) | \(\lt\) ] \(0,6 - 2b\) .
3. \(-\dfrac{1}{2}\left( a+\dfrac{1}{9}\right)\) [ \(\gt\) | \(\lt\) ] \(-\dfrac{1}{2}\left( b+\dfrac{1}{9}\right)\) .
4. \(\dfrac{5}{a}-18\) [ \(\gt\) | \(\lt\) ] \(\dfrac{5}{b}-18\) .
5. \(-\dfrac{7}{9a}-99\) [ \(\gt\) | \(\lt\) ] \(-\dfrac{7}{9b}-99\) .