9分之7减X加6分之5等于1又18分之5
人气：276 ℃ 时间：2019-09-29 00:18:05
解答
7/9-x-5/6=23/18
-x=23/18-7/9+5/6
-x=23/18-14/18+5/6
-x=9/18+5/6
-x=1/2+5/6
-x=3/6+5/6
-x=8/6
x=-4/3
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