Respuesta :

apologiabiology
[tex]( \frac{a}{b} )( \frac{c}{d} )= \frac{ac}{bd} [/tex] so
[tex]( \frac{3}{10} )( \frac{-4}{5} )= \frac{3*-4}{10*5}= \frac{-12}{50}= \frac{-6}{25} [/tex]