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Ta có : \(\dfrac{4}{5}< 1\) ; \(\dfrac{4}{7}< 1\) \((\) vì có cùng tử số mà mẫu số lớn hơn thì bé hơn \()\)
\(\dfrac{2}{1}=2;\dfrac{6}{2}=3;\dfrac{9}{8}>1;\dfrac{8}{5}>1\)
\(\Rightarrow\) thứ tự từ bé đến lớn:\(\dfrac{4}{7};\dfrac{4}{5};\dfrac{9}{8};\dfrac{8}{5};\dfrac{2}{1};\dfrac{6}{2}\)
\(#Vy\)
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\(\dfrac{1}{2}< \dfrac{1+1}{2+1}=\dfrac{2}{3}\)
\(\dfrac{2}{3}< \dfrac{2+1}{3+1}=\dfrac{3}{4}\)
\(\dfrac{3}{4}< \dfrac{3+1}{4+1}=\dfrac{4}{5}\)
\(\dfrac{4}{5}< \dfrac{4+1}{5+1}=\dfrac{5}{6}\)
\(\dfrac{5}{6}< \dfrac{5+1}{6+1}=\dfrac{6}{7}\)
\(\)Vậy \(\dfrac{1}{2}< \dfrac{2}{3}< \dfrac{3}{4}< \dfrac{4}{5}< \dfrac{5}{6}< \dfrac{6}{7}\)
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` @Answer`
Ta có :
`3/5=(3xx24)/(5xx24)=72/120`
`7/3=(7xx40)/(3xx40)= 280/120`
`6/8=(6xx15)/(8xx15)=90/120`
`5/3=(5xx40)/(3xx40)=200/120`
`-` Thứ tự từ bé đến lớn là :
`->3/5 ;6/8 ; 5/3; 7/3`
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\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)
\(1\frac{1}{2};1\frac{1}{3};1\frac{1}{4};1\frac{1}{5};1\frac{1}{6};1\frac{1}{7};1\frac{1}{8}\)\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)
Vì \(\frac{1}{2}>\frac{1}{3}>\frac{1}{4}>\frac{1}{5}>\frac{1}{6}>\frac{1}{7}>\frac{1}{8}\)
=> \(1\frac{1}{2}>1\frac{1}{3}>1\frac{1}{4}>1\frac{1}{5}>1\frac{1}{6}>1\frac{1}{7}>1\frac{1}{8}\)
Hay \(\frac{3}{2}>\frac{4}{3}>\frac{5}{4}>\frac{6}{5}>\frac{7}{6}>\frac{8}{7}>\frac{9}{8}\)
\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)
\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)
3/10 , 2/5 , 1/2 , ,5/8