Question

вычислите:9 45/(4 23*10 12);6 23/(45-720)

Answer 1

$9 frac{4}{5} /[4 frac{2}{3} *10 frac{1}{2} ]= frac{49}{5} /[ frac{14}{3} * frac{21}{2} ]= frac{49}{5} /49= frac{49}{5} * frac{1}{49}= frac{1}{5}$
$6 frac{2}{3} /[ frac{4}{5}- frac{7}{20}]= frac{20}{3}/[ frac{16-7}{20}]=frac{20}{3}/ frac{9}{20}=3$