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hayvlog123
2 năm trước
[(155- $\frac{10}{7}$ -$\frac{5}{11}$ +$\frac{5}{23}$)] ÷ [(402-$\frac{26}{7}$ -$\frac{13}{11}$+$\frac{13}{23}$)]+[($\frac{3}{5}$+$\frac{3}{13}$-0,9) ÷($\frac{7}{91}$+0,2-$\frac{3}{10}$)]
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