![](https://rs.olm.vn/images/background/bg78702033279.jpg?v=2?)
![](https://rs.olm.vn/images/avt/3.png?13)
Cao Thị Kim Ngân
Giới thiệu về bản thân
Chào mừng bạn đến với trang cá nhân của Cao Thị Kim Ngân
![](https://rs.olm.vn/images/medal_mam_non.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_win_1.png)
0
![](https://rs.olm.vn/images/medal_tan_binh.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_win_1.png)
0
![](https://rs.olm.vn/images/medal_chuyen_can.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_win_1.png)
0
![](https://rs.olm.vn/images/medal_cao_thu.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_win_1.png)
0
![](https://rs.olm.vn/images/medal_thong_thai.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_win_1.png)
0
![](https://rs.olm.vn/images/medal_kien_tuong.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_win_1.png)
0
![](https://rs.olm.vn/images/medal_dai_kien_tuong.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_win_1.png)
0
2022-04-27 18:09:53
a) 12⋅43−203⋅4512⋅43−203⋅45
=\(\dfrac{2}{3}\)
−\(\dfrac{16}{3}\)
=23−163
=\(\dfrac{-14}{3}\)
=−143 ;
b) 37+−619+47+−131937+−619+47+−1319
=(37+47)+(−619+−1319)=(37+47)+(−619+−1319)
=77+−1919=77+−1919
=1+(−1)=0=1+(−1)=0 ;
c) 35⋅89−79⋅35+35⋅26935⋅89−79⋅35+35⋅269
=35⋅(89−79+269)=35⋅(89−79+269)
=35⋅279=35⋅279
=35⋅3=35⋅3
=95=95.
2022-04-22 08:32:35
2022-01-05 10:15:35
2022-01-05 10:15:35
2022-01-05 10:15:35
2022-01-05 10:15:35
2022-01-05 10:15:35
2022-01-05 10:15:35
2022-01-05 10:15:35
2022-01-05 10:15:35