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Toán Lớp 7: `(` $\dfrac{x}{y}$ `- x )` `. ( x + ` $\dfrac{2}{5}$ `)` `=` `0`

Home/ Toán Lớp 7: `(` $\dfrac{x}{y}$ `- x )` `. ( x + ` $\dfrac{2}{5}$ `)` `=` `0`

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