Question

Выполните действия :А. 4 2/3 *1 2/7 Б. 5/8*4/5.В.9/25 *2 1/7 *1 5/9

Answer 1

А:
$4 frac{2}{3} times 1 frac{2}{7} = frac{14}{3} times frac{9}{7} = frac{126}{21} = 6$
Б:
$frac{5}{8} times frac{4}{5} = frac{20}{40} = frac{1}{2}$
В:
$frac{9}{25} times 2 frac{1}{7} times 1 frac{5}{9} =frac{9}{25} times frac{15}{7} =frac{135}{75} =$
$= frac{27}{35} \ \ frac{27}{35} times 1frac{5}{9} = frac{27}{35} times frac{14}{9} = frac{378}{315} =$
$= 1 frac{1}{5}$