当x等于多少时,代数式x减3分之1+2x的值等于1
人气：149 ℃ 时间：2019-10-19 13:13:08
解答
X-(1+2x/3)=1
X-(3/3+2x/3)=1
X-(3+2x/3)=1
3X-(3+2x)=3
3X-3-2x=3
X-3=3
X=6
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