A/ X = 15 B/ X=120 W
2/ a/ x = 15 b/ x=120
W: https://traloihay.net F: https://traloihay.net Y: youtube.com/c/hoc247tvc
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0,5đW: https://traloihay.net F: https://traloihay.net Y: youtube.com/c/hoc247tvc
Trang | 3
0,5đ