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hienhoang0607
2 năm trước
mọi người ơi cứu!! cho biết 2 đại lượng x và y tỉ lệ thuận vs nhau và khi x = -5 thì y= 1/2 . Khi y =5 thì giá trị tương ứng của x là : A :50 B :1/50 C: -50 D: -1/50
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