Ответ:

-6целых 1/90

Пошаговое объяснение:

...= -91/5÷(-26/3)-8целых 1/9

7/5*3/2-73/9

21/10-73/9=-541/90= -6целых 1/90

[tex]-18,2:-8\frac{2}{3} + (-8\frac{1}{9} )= 18\frac{1}{5} :-8\frac{2}{3} -8\frac{1}{9} =\\=-\frac{18*5+1}{5} : -\frac{8*3+2}{3} - 8\frac{1}{9}=-\frac{91}{5} : -\frac{26}{3} - 8\frac{1}{9}=\\\\=\frac{91}{5} *\frac{3}{26} - 8\frac{1}{9}=\frac{13*7*3}{5*13*2} - 8\frac{1}{9}= \frac{21}{10} - 8\frac{1}{9}= 2\frac{1}{10} - 8\frac{1}{9} =-(8\frac{1}{9}-2\frac{1}{10})=\\\\=-((8+\frac{1}{9})-(2+\frac{1}{10}))=-(8-2+(\frac{1}{9}-\frac{1}{10})=-6\frac{10-9}{9*10} =\\=-6\frac{1}{90}[/tex]