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![](https://rs.olm.vn/images/avt/0.png?1311)
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\(x=\frac{-17}{23}\)
\(y=\frac{-171717}{232323}=\frac{\left(-171717\right):10101}{232323:10101}=\frac{-17}{23}\)
\(\Rightarrow x=y\)
![](https://rs.olm.vn/images/avt/0.png?1311)
-171717/232323 = -10101x17/10101x23 = -17/23
mà -17/23 = -17/23
do đó -17/23 = -171717/232323
![](https://rs.olm.vn/images/avt/0.png?1311)
c1
x=-5/8=-0,625
y=14/(-7)=-2
vì 0,625<2 nên -0,625>-2
vậy x>y
c2
x=-5/8 vì 5<8 =>5/8<1=>-5/8>1
y=-14/7 vì 14>7=>14/7>1=>-14/7<1
vậy x>y
c3
quy đồng hai phân số
c4
biểu diễn trên trục số hữu tỉ
![](https://rs.olm.vn/images/avt/0.png?1311)
a)-17/23=-171717/232323
b)-265/317<-83/111
c)2002/2003<14/13
d)-27/463<1/3
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(-\dfrac{11}{33}< 0< \dfrac{25}{16}\)
b: \(-\dfrac{17}{23}=\dfrac{-171717}{232323}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
b] \(\frac{127}{-128}>-1\)\(;\)\(\frac{-1345}{1244}< -1\)
\(\Rightarrow\frac{127}{-128}>-1>\frac{-1345}{1244}\Rightarrow\frac{127}{-128}>\frac{-1345}{1244}\)
c]\(\frac{-11}{33}=\frac{-1}{3}\)\(;\)\(\frac{25}{-76}>\frac{25}{-75}=\frac{-1}{3}\)\(\Rightarrow\frac{-11}{33}=\frac{-1}{3}< \frac{25}{-76}\Rightarrow\frac{-11}{33}< \frac{25}{-76}\)
d] \(\frac{-171717}{232323}=\frac{-17\times10101}{23\times10101}=\frac{-17}{23}\)\(\Rightarrow\frac{-17}{23}=\frac{-171717}{232323}\)
Ta co :
y=-171717/232323=-17/23
Ma :-17/23=-17/23
Vay x=y