выполните деление -4/(-9), -5/(-7), 3,4/(-6/10),

[tex] \frac{-4}{-9} = \frac{4}{9} [/tex]

[tex] \frac{-5}{-7} = \frac{5}{7} [/tex]

[tex] \frac{3,4}{ \frac{-6}{10} } =- \frac{34*10}{10*6} =- \frac{34}{6} =-5 \frac{2}{3} [/tex]