Question

Найдите значение выражения 8-4,2:(2 3/24-1 4/24)

Answer 1

$8-4.2:(2 frac{3}{24}-1 frac{4}{24})=8-4.2:( frac{51}{24}- frac{28}{24})=8- frac{42}{10}: frac{23}{24}=8- frac{42*24}{10*23}=$
$=8- frac{42*12}{5*23}= frac{8*115-504}{115}= frac{416}{115}=3 frac{71}{115}$