Question

Решите эти 2 примера,плиз(18б)

Answer 1

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