Question

Найдите значение выражений

Answer 1

16)
$124 div (3 frac{7}{45} - frac{2}{5} ) = 124 div ( frac{142}{45} - frac{2}{5} ) = 124 div ( frac{142}{45} - frac{18}{45} ) = 124 div frac{124}{45} = 124 times frac{45}{124} = 45$
17)
$75.6 div (2 frac{24}{35} - frac{2}{7}) = 75 frac{6}{10} div ( frac{94}{35} - frac{2}{7} ) = 75 frac{3}{5} div ( frac{94}{35} - frac{10}{35} ) = frac{378}{5} div frac{84}{35} = frac{378}{5} times frac{35}{84} = frac{9 times 7}{1 times 2} = frac{63}{2} = 31.5$
18)
$118 div (3 frac{41}{70} - frac{3}{14} ) = 118 div ( frac{251}{70} - frac{3}{14} ) = 118 div ( frac{251}{70} - frac{15}{70} ) = 118 div frac{236}{70} = 118 times frac{70}{236} = frac{70}{2} = 35$
19)
$191 div (2 frac{1}{70} - ( - frac{5}{7} )) = 191 div ( frac{141}{70} + frac{5}{7} ) = 191 div ( frac{141}{70} + frac{50}{70} ) = 191 div frac{191}{70} = 191 times frac{70}{191} = 70$