Tìm x biết rằng (1 + 2y)/18 = (1 + 4y)/24 = (1 + 6y)/6x

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<!--[endif]-->1.Tìm x biết rằng 1+2y
18
2.chứng minh rằng
|(a+b+ca) = a
d
1+4y 1+6y
24
6x