\(\frac{5\cdot8+10\cdot24+15\cdot32}{10\cdot16+20\cdot48+30\cdot64}\)

\(\frac{5\cdot8\left(1+2\cdot3+3\cdot4\right)}{10\cdot16\left(1+2\cdot3+3\cdot4\right)}\)

\(\frac{1}{4}\)

\(\frac{5.8+10.24+15.32}{10.16+20.48=30.64}\)

\(\frac{40+40.6+40.12}{160+160.6+160.12}\)

\(\frac{40.\left(1+6+12\right)}{160.\left(1+6+12\right)}\)

\(\frac{40}{140}=\frac{1}{4}\)

\(\frac{5.8+10.24+15.32}{10.16+20.48+30.64}\)=\(\frac{40+40.6+40.12}{160+160.6+160.12}\)

                                                 =\(\frac{40.\left(1+6+12\right)}{160.\left(1+6+12\right)}\)

                                                 =\(\frac{1}{4}\)

hok tốt

phương anh##

31.36/61.28

Thanks bạn nha , đúng là trường hợp khẩn cấp thì lại có bạn , thanks bạn so ,so ,so, so ,so,.... much

giúp mik vs mik cần gấp 

VIẾT HẲN PS RA CHỨ KO HIỂU

\(\frac{2.3+6.9+10.15+14.21}{2.5+6.15+10.25+14.35}\)

Rút gọn:

\(=\frac{3}{5}+\frac{3}{5}+\frac{3}{5}+\frac{3}{5}\)

\(=\frac{12}{5}\)

\(\frac{2.3+6.9+10.15+14.21}{2.5+6.15+10.25+14.35}=\frac{2.3+6.3.3+10.5.3+14.7.3}{2.5+6.3.5+10.5.5+14.7.5}\)

\(=\frac{3\left(2.1+6.3+10.5+14.7\right)}{5\left(2.1+6.3+10.5+14.7\right)}=\frac{3}{5}\)

\(\frac{1946\times131+1600}{132\times1946-346}\)

\(=\frac{1946\times131+1600}{131\times1946+1946-346}\)

\(=\frac{1946\times131+1600}{131\times1946+1600}=1\)

 0,9913769643

\(\frac{1946x131+1000}{132x1946-946}=\frac{1946x131+1000}{\left(131+1\right)x1946-946}=\frac{1946x131+1000}{131x1946+1946-946}=\frac{1946x131+1000}{1946x131+1000}=1\)

132x1946 phải trừ đi 946 mới đúng đề bạn nhé

= \(\frac{255926}{256526}=0,9976610558\)

K MK NHA