Question

решите уравнение x : 4/25 =3/4 :4/5

Answer 1

$cfrac{x}{ cfrac{4}{25} } = cfrac{ cfrac{3}{4} }{ cfrac{4}{5} } \ x= cfrac{ cfrac{3}{4} cdot cfrac{4}{25}}{ cfrac{4}{5} } = cfrac{ cfrac{3}{25}}{ cfrac{4}{5} } =cfrac{15}{100}=0.15$