![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](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)
a \(\frac{19}{13}>\frac{87}{65}\)
b, \(\frac{5}{17}< \frac{11}{34}\)
c, \(-0,22\left(23\right)< -0,2223\)
![](https://rs.olm.vn/images/avt/0.png?1311)
0,22(23) = 0,22 + 0,00(01) x 23 = 11/50 + 1/9900 x 23 = 11/50 + 23/9900 = 2201/9900
![](https://rs.olm.vn/images/avt/0.png?1311)
So sánh \(\frac{-19}{49}\)và\(\frac{-23}{27}\)
Quy đồng lên ta được: \(\frac{-19}{49}=\frac{\left(-19\right).47}{49}=\frac{-893}{2303}\)và\(\frac{-23}{47}=\frac{\left(-23\right).49}{47.49}=\frac{-1127}{2303}\)
Mà: \(\frac{-893}{2303}>\frac{-1127}{2303}\)\(\Rightarrow\frac{-19}{49}>\frac{-23}{47}\)
![](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 so sánh:\(\frac{23}{88}và\frac{13}{38}\)
Ta có:\(\frac{23}{88}< \frac{23}{69}=\frac{1}{3}=\frac{13}{39}< \frac{13}{38}\)
\(\Rightarrow\frac{23}{88}< \frac{13}{38}\Rightarrow-\frac{23}{88}>-\frac{3}{38}\)
0,22(23)=0,22232323
0,2223=0,22230000
rõ ràng dễ thấy
0,22(23)>0,2223