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2 năm trước
1) $\frac{9x-48}{18y-54}$ = $\frac{2x-14}{4y-12}$ 2) $\frac{x.y-x^{2}}{y^{2} -x.y}$ = $\frac{x}{y}$ CÁC BẠN NHÂN TÀI GIÚP MÌNH NHÉ BẠN NÀO LÀM XONG ĐẦU TIÊN MÌNH SẼ CHO CTLHN!!!!
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