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Toán Lớp 7: Tìm x biết: 0,5 – ($\frac{2}{5}$ + x) = $\frac{2}{3}$

Home/ Toán Lớp 7: Tìm x biết: 0,5 – ($\frac{2}{5}$ + x) = $\frac{2}{3}$

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