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Giang Vi
Giới thiệu về bản thân
![](https://rs.olm.vn/images/medal_mam_non.png)
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![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_win_1.png)
![](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)
![](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)
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![](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)
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![](https://rs.olm.vn/images/medal_ngoi_sao.png)
![](https://rs.olm.vn/images/medal_ngoi_sao.png)
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![](https://rs.olm.vn/images/medal_win_1.png)
con trâu
1+1=2 2+2=4
30 : 6 = 5
x +100 = 300 x = 300 -100 x = 200
60,5
số tuổi của An năm nay là : 5+7 =12 (tuổi) số tuổi của An 8 năm sau là : 12+8 = 20 ( tuổi ) đáp số : 20 tuổi
a) diện tích hình thang là 238cm2 b) diện tích hình thang là 57,96dm2