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\(\frac{1}{10}\cdot\frac{2}{3}\cdot\frac{3}{4}\cdot\frac{4}{5}\cdot\frac{5}{6}\cdot\frac{6}{5}\cdot\frac{5}{4}\cdot\frac{4}{3}\cdot\frac{3}{2}=\frac{1}{10}\)
\(\frac{1}{10}\times\frac{2}{3}\times\frac{3}{4}\times\frac{4}{5}\times\frac{5}{6}\times\frac{6}{5}\times\frac{5}{4}\times\frac{4}{3}\times\frac{3}{2}\)\(\frac{3}{2}\)
\(=\frac{1}{10}\times\left(\frac{2}{3}\times\frac{3}{2}\right)\times\left(\frac{3}{4}\times\frac{4}{3}\right)\times\left(\frac{4}{5}\times\frac{5}{4}\right)\times\left(\frac{5}{6}\times\frac{6}{5}\right)\)
\(=\frac{1}{10}\times1\times1\times1\times1\)
\(=\frac{1}{10}\)
#Chúc bạn học tốt !
#k cho mình nhé ?
\(\frac{3}{4}\times\frac{9}{7}\times\frac{11}{25}\)
\(=\frac{297}{700}\)
Chúc bn học tốt!!!!!
a) \(\frac{16}{35}+\frac{8}{35}=\frac{24}{35}\)
b)\(\frac{160}{77}-\frac{28}{77}=\frac{132}{77}=\frac{12}{1}=12\)
c)\(\frac{72}{180}=\frac{18}{45}\)
d) \(\frac{90}{360}=\frac{1}{4}\)
\(\frac{4}{15}:\frac{4}{7}< x< \frac{2}{5}.\frac{10}{3}\Leftrightarrow\frac{7}{15}< x< \frac{20}{15}\)
\(\Rightarrow x\in\left(8;9;10;11;12;13;14;15;16;17;18;19\right)\)
Ta có : \(\frac{4}{15}:\frac{4}{7}< x< \frac{2}{5}\cdot\frac{10}{3}\)
\(\Rightarrow\frac{4}{15}\cdot\frac{7}{4}< x< \frac{2}{5}\cdot\frac{10}{3}\)
\(\Rightarrow\frac{7}{15}< x< \frac{20}{15}\)
\(\Rightarrow7< x< 20\)
\(\Rightarrow x\in\left\{8;9;10;11;12;...;19\right\}\)
\(x+\frac{1}{2}+x+\frac{1}{4}+x+\frac{1}{8}+x+\frac{1}{16}=\frac{23}{16}=>4x=\frac{23}{16}-\frac{15}{16}=\frac{1}{2}=>x=\frac{1}{8}\)
(xx4)+1/2+1/4+1/8+1/16=23/16
xx4=23/16-(1/2+1/4+1/8+1/16)
xx4=1/2
x=1/2:4
x=1/8
Đúng 100% nhé Nhớ k cho mình đấy
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
Vì \(\frac{1}{6}< 1\) mà \(\frac{169}{98}>1\) \(\Rightarrow x=1\)
nhớ k cho mik nha
\(\frac{3}{2}\times\frac{4}{5}\times\frac{2}{6}\times\frac{15}{4}\)
\(=\frac{6}{5}\times\frac{2}{6}\times\frac{15}{4}\)
\(=\frac{2}{5}\times\frac{15}{4}\)
\(=\frac{3}{2}\)
3/2 x 4/5 x 2/6 x 15/4 = 3/2