\[( - 9,7 + 7,1)\ :\left( - 1\frac{4}{9} \right) = - 2,6\ :\left( - \frac{13}{9} \right) =\]
\[= \frac{26 \cdot 9}{10 \cdot 13} = \frac{2 \cdot 9}{10 \cdot 1} = \frac{1 \cdot 9}{5} = \frac{9}{5} = 1\frac{4}{5} = 1,8\]