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数学
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3x-2y除3x+2y=13分之5,求x分之y的值
急
人气:362 ℃ 时间:2019-12-09 13:43:42
解答
(3x-2y)/(3x+2y)=5/13
13(3x-2y)=5(3x+2y)
39x-26y=15x+10y
24x=36y
y/x=24/36=2/3
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