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当X等于什么数时,X-X-1/3的值与7-X 3/5的值互为相反数
人气：279 ℃ 时间：2020-01-28 03:23:57
解答
X-X-1/3+7-X 3/5=0
-3/5x=-20/3
x=100/9
当x=100/9时,X-X-1/3的值与7-X 3/5的值互为相反数 .
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