Ответ:
6
5
∗
3
2
∗
12
1
3
1
∗
4
1
∗
2
1
=
216
10
24
1
=
24
1
∗
10
216
=
10
9
=0,9
$$\frac{\frac{3}{5}-\frac{1}{3}-\frac{2}{9}}{\frac{7}{15}+\frac{2}{3}-\frac{4}{5}}} = \frac{ \frac{27}{45}-\frac{15}{45}-\frac{10}{45}}{ \frac{7}{15}+\frac{10}{15}-\frac{12}{15}}= \frac{\frac{2}{45}}{\frac{5}{15}}=\frac{2}{45}* \frac{15}{5}=\frac{2}{15}$$