解方程,,得x=________.

发布时间:2020-08-04 14:45:13

解方程,,得x=________.

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5
解析分析:此方程应采用逐步去括号的办法,根据等式的性质,两边同乘2,再同减去4,然后两边同乘3,再同加上6,然后同乘4,再同加上1,最后同城5即可.

解答:{[(x-1)-6]+4}=1,?{[(x-1)-6]+4}×2=1×2,????????[(x-1)-6]+4=2,????? [(x-1)-6]+4-4=2-4,????????? [(x-1)-6]=-2,?????? [(x-1)-6]×3=-2×3,????????????? (x-1)-6=-6,??????????? (x-1)-6+6=-6+6,?????????????? ?(x-1)=0,?????????? ? (x-1)×4=0×4,?????????????????? ???x-1=0,?????????????????? ?x-1+1=0+1,??????????????????? ??? x=1,??????????????????? ? x×5=1×5,?????????????????????? ??? x=5.故
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