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nivuive123
2 năm trước
tìm x và y: a)$\frac{x}{y}$ = $\frac{2}{-5}$ và y - x = -7 b) $\frac{x}{3}$ = $\frac{4}{16}$ và 3x - y = 35 c)$\frac{x}{4}$ = $\frac{y}{3}$ và x. y = 12 nhanh chi tiết và chính xác nhất nha
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