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ngoc13112003
2 năm trước
Bài 2 ; Tính a, $\frac{24.47-23}{24+47.23}$ b, $\frac{3+\frac{3}{7} -\frac{3}{11}+ \frac{3}{1001}-\frac{3}{13} }{\frac{9}{1001}-\frac{9}{13}+\frac{9}{7} -\frac{9}{11}+9 }$ Mn giúp mik với ạ
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