Question

Решите эти 2 примера,плиз(18б)

Answer 1

$frac{2}{7 } times (5 frac{1}{3} times ( frac{3}{4} )) times frac{7}{9} = frac{2}{7} times ( frac{16}{3} times - frac{3}{4} ) times frac{7}{9} = frac{2}{7} times - 4 times frac{7}{9} = frac{8}{7} times frac{7}{9} = frac{8}{9} \ ( 3 frac{1}{3} times 2 frac{1}{4}) times (( - frac{1}{2} times frac{4}{5}) = frac{10}{3} times frac{9}{4} times - frac{2}{5} = frac{15}{2} times - frac{2}{5} = - 3$