解方程组1/(x-y)-1/(x+y)=3/20,2/(x+y)+3/(x-y)=19/20我给点提示:1/(x-y)-1/(x+y)=3/20 ①2/(x+y)+3/(x-y)=19/20 ②......╮(╯▽╰)╭哎!看来还得问别人了

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