Помогите решить номер 701 под 2)4)6)8 номерами ДАМ 10БАЛЛОВ

2)
38/147*91/152*65/264=1/147*91/4*65/264=1/147*91/4*65/264=
=5915/155232

4)
(3/4+2/9)*(2 23/56-3 15/56)=(27/36+8/36)*(2 8/56-3)=35/36*(-48/56)=
=35/36*(-6/7)=-5/36*6/1=-5/6*1/1=-5/6

6)
5,86-3 5/6*15/23+15/28:4 2/7=5,86-23/6*15/23+15/28:30/7=
=5,86-1/6*15/1+15/28*7/30=5,86-15/6+1/28*7/2=5,86-5/2+1/4*1/2=
=5,86-2,5+1/8=5,86-2,5+0,125=3,485

8)
$\frac{5 \frac{1}{7}* 5\frac{1}{4} + 5 \frac{5}{8}:3 \frac{1}{5} }{10 \frac{5}{13}:1 \frac{1}{26} }= \frac{ \frac{36}{7}* \frac{21}{4} + \frac{45}{8}: \frac{16}{5} }{ \frac{135}{13}: \frac{27}{26} }=\frac{ \frac{9}{1}* \frac{3}{1} + \frac{45}{8}* \frac{5} {16} }{ \frac{135}{13}* \frac{26}{27} }= \\ =\frac{ 27+ \frac{225}{128} }{ \frac{5}{1}* \frac{2}{1} }=\frac{ 27+ 1\frac{97}{128} }{ 10}=28 \frac{97}{128}:10= 3681/128*1/10=3681/1280=\\=2 \frac{1121}{1280}$