=99:100

ai k minh minh k lai cho

đáp số: 99:100

\(\frac{3}{10}x\frac{5}{6}=4x\frac{7}{18}=\frac{14}{9}x\frac{9}{14}=1\)

kia là dấu nhân phải ko??

Nếu vậy ta có: (rút gọn từng cái rồi ráp lại cho dễ)

\(\frac{3}{10}\times\frac{5}{6}=\frac{1}{2}\times\frac{1}{2}=\frac{1}{4}\left(rutgoncheo\right)\)

\(\frac{7}{18}\times\frac{9}{14}=\frac{1}{2}\times\frac{1}{2}=\frac{1}{4}\left(rutgoncheo\right)\)

Ráp lại có: \(\frac{1}{4}\times\frac{1}{4}=\frac{1}{16}\)

\(\frac{5}{8}:x=\frac{3}{4}\)

\(x=\frac{5}{8}:\frac{3}{4}\)

\(x=\frac{5}{6}\)

\(\frac{2}{4}+\frac{3}{4}:\frac{1}{2}\)

\(=\frac{2}{4}+\frac{6}{4}\)

\(\frac{8}{4}=2\)

Hok tốt

mọi người giúp mình bài

3636/4545+x=4848/1515

x=4848/1515-3636/4545

x=14544/4545-3636/4545

x=10908/4545

3535/5050-x=8/25

x=3535/5050-1616/5050

x=1919/5050

\(\frac{1}{10}\cdot\frac{2}{3}\cdot\frac{3}{4}\cdot\frac{4}{5}\cdot\frac{5}{6}\cdot\frac{6}{5}\cdot\frac{5}{4}\cdot\frac{4}{3}\cdot\frac{3}{2}=\frac{1}{10}\)

\(\frac{1}{10}\times\frac{2}{3}\times\frac{3}{4}\times\frac{4}{5}\times\frac{5}{6}\times\frac{6}{5}\times\frac{5}{4}\times\frac{4}{3}\times\frac{3}{2}\)\(\frac{3}{2}\)

\(=\frac{1}{10}\times\left(\frac{2}{3}\times\frac{3}{2}\right)\times\left(\frac{3}{4}\times\frac{4}{3}\right)\times\left(\frac{4}{5}\times\frac{5}{4}\right)\times\left(\frac{5}{6}\times\frac{6}{5}\right)\)

\(=\frac{1}{10}\times1\times1\times1\times1\)

\(=\frac{1}{10}\)

#Chúc bạn học tốt !

#k cho mình nhé ?

Kết quả bằng 1/2016

=1/2016 do

\(\frac{3}{2}\times\frac{4}{5}\times\frac{2}{6}\times\frac{15}{4}\)

\(=\frac{6}{5}\times\frac{2}{6}\times\frac{15}{4}\)

\(=\frac{2}{5}\times\frac{15}{4}\)

\(=\frac{3}{2}\)

3/2 x 4/5 x 2/6 x 15/4 = 3/2