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Nguyễn Minh Hải
Giới thiệu về bản thân
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2022-10-31 21:26:25
=\(\dfrac{21}{15}+\)\(\dfrac{40}{15}\)-\(\dfrac{2}{5}\)
=\(\dfrac{61}{15}\)-\(\dfrac{6}{15}\)
=\(\dfrac{55}{15}\)