Thực hiện các phép tính sau
----- Nội dung dịch tự động từ ảnh -----
6) \(\frac{17}{-26} \left( \frac{1}{6} - \frac{5}{3} \right) : \frac{17}{13} - \frac{20}{3} \left( \frac{2}{5} - \frac{1}{4} \right) + \frac{2}{3} \left( \frac{6}{5} - \frac{9}{2} \right);\)
7) \(-\frac{3}{4} \left( \frac{1}{4} - \frac{5}{8} \right) + \frac{3}{8} \left( \frac{4}{3} - \frac{16}{9} \right) - \frac{5}{7} \left( \frac{14}{15} - \frac{21}{10} \right);\)
8) \(-\frac{8}{9} \left( \frac{9}{8} - \frac{3}{2} \right) + \frac{5}{2} : \left( \frac{15}{4} - \frac{3}{4} \right) - \frac{10}{9} \left( \frac{8}{3} : -\frac{1}{3} \right);\)
6) \(\frac{17}{-26} \left( \frac{1}{6} - \frac{5}{3} \right) : \frac{17}{13} - \frac{20}{3} \left( \frac{2}{5} - \frac{1}{4} \right) + \frac{2}{3} \left( \frac{6}{5} - \frac{9}{2} \right);\)
7) \(-\frac{3}{4} \left( \frac{1}{4} - \frac{5}{8} \right) + \frac{3}{8} \left( \frac{4}{3} - \frac{16}{9} \right) - \frac{5}{7} \left( \frac{14}{15} - \frac{21}{10} \right);\)
8) \(-\frac{8}{9} \left( \frac{9}{8} - \frac{3}{2} \right) + \frac{5}{2} : \left( \frac{15}{4} - \frac{3}{4} \right) - \frac{10}{9} \left( \frac{8}{3} : -\frac{1}{3} \right);\)