МНОГОЭТАЖНЫЕ ДРОБИ! 50 БАЛЛОВ! 1) 1/3 * 1/4 * 1/2 -------------------- 5/6 * 2/3 * 1/12...

Решите задачу:

$\frac{ \frac{1}{3}* \frac{1}{4}* \frac{1}{2}}{ \frac{5}{6}* \frac{2}{3}* \frac{1}{12}}= \frac{ \frac{1}{24} }{ \frac{10}{216}}= \frac{1}{24}* \frac{216}{10}= \frac{9}{10}=0,9$

$\frac{\frac{3}{5}-\frac{1}{3}-\frac{2}{9}}{\frac{7}{15}+\frac{2}{3}-\frac{4}{5}}} = \frac{ \frac{27}{45}-\frac{15}{45}-\frac{10}{45}}{ \frac{7}{15}+\frac{10}{15}-\frac{12}{15}}= \frac{\frac{2}{45}}{\frac{5}{15}}=\frac{2}{45}* \frac{15}{5}=\frac{2}{15}$