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Bài 1:
18/27=2/3
35/25=7/5
54/72=3/4
78/66=13/11
92/100=23/25
75/125=3/5
126/165=42/55
150/300=1/2
1717/1515=17/15
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{1717}{3232}=\frac{17}{32};\frac{1515}{1616}=\frac{15}{16}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có :
\(\frac{1515}{1717}\) = \(\frac{1515:101}{1717:101}\)= \(\frac{15}{17}\)
Vậy ta được phân số : \(\frac{15}{17}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(24m=\frac{24}{1000}km=\frac{3}{125}km.\)
6 yến = \(\frac{6}{100}\)tấn = \(\frac{3}{50}\)tấn.
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\(\frac{1515}{1717}=\frac{1515\div101}{1717\div101}=\frac{15}{17}\)
24m = \(\frac{24}{1000}\)km = \(\frac{3}{125}\)km
6 yến = \(\frac{6}{100}\)tấn = \(\frac{3}{50}\)tấn
\(\frac{1515}{1717}\)= \(\frac{15}{17}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
1313/3737 rút gọn thành 13/37
13/37=0,(351)
1717/4141 rút gọn thành 17/41
17/41=0,(41463)
vì 0,(351)<0,(41463) suy ra 13/37<17/41