а) $\frac{27}{35}\cdot\frac{7}{9}-\frac{9}{24}\cdot\frac{6}{45}$;

Question

Вопрос: $Фото задания: а) $\frac{27}{35}\cdot\frac{7}{9}-\frac{9}{24}\cdot\frac{6}{45}$;$ Фото задания

Accepted Answer

$\frac{27}{35}\cdot\frac{7}{9}=\frac{3}{5}$.

$\frac{9}{24}\cdot\frac{6}{45}=\frac{3}{8}\cdot\frac{2}{15}=\frac{1}{20}$.

$\frac{3}{5}-\frac{1}{20}=\frac{12}{20}-\frac{1}{20}=\frac{11}{20}$.

Ответ: $\frac{11}{20}$.

а) \(\frac{27}{35}\cdot\frac{7}{9}-\frac{9}{24}\cdot\frac{6}{45}\);