[tex] \frac{2}{3} \times \frac{4}{5} = - [/tex]
[tex] \frac{9}{4} \times \frac{7}{6} = - [/tex]
[tex] \frac{4}{6} \times \frac{5}{3} = - [/tex]
[tex] \frac{3}{9} \times \frac{5}{2} = - [/tex]
ayuda porfa ​