До завтра пожалуйста:)))))))))

1.
$\frac{5}{11}$
2.
$\frac{3}{8} + \frac{5}{7} - \frac{9}{14} \\ \\ 1) \frac{3}{8} + \frac{5}{7} = \frac{21+40}{35} = \frac{61}{35} \\ \\ 2) \frac{61}{35} - \frac{9}{14} = \frac{122-45}{70} = \frac{77}{70} = 1\frac{7}{70}$
3.
$0,96 - \frac{53}{75} + \frac{2}{15} = \frac{24}{25} - \frac{53}{75} + \frac{2}{15} = \frac{72-53+10}{75} = \frac{9}{75} = \frac{3}{25}$
4.
$( \frac{3}{4} + x) - \frac{19}{40} = \frac{21}{50} \\ \\ \frac{3}{4} + x = \frac{21}{50} + \frac{19}{40} \\ \\ \frac{3}{4} + x = \frac{84+95}{200} \\ \\ \frac{3}{4} + x = \frac{179}{200} \\ \\ x = \frac{179}{200} - \frac{3}{4} \\ \\ x= \frac{179-150}{200} \\ \\ x= \frac{29}{200}$
5.
(1,05+2,016):(5*(4,53-3,8))=3,066:(5*0,73)=3,066:3,65=0,84
6 и 7 не знаю.