||||x-1|-1|-1|-1|=0,
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||||x-1|-1|-1|-1|=0,||||x-1|-1|-1|-1|=0,||||x-1|-1|-1|-1|=0,|||x-1|-1|-1|-1=0|||x-1|-1|-1|=1||x-1|-1
||||x-1|-1|-1|-1|=0,
||||x-1|-1|-1|-1|=0,
||||x-1|-1|-1|-1|=0,
|||x-1|-1|-1|-1=0
|||x-1|-1|-1|=1
||x-1|-1|-1=1或-1
||x-1|-1|=2或0
|x-1|-1=2或-2或0
|x-1|=3或-1或1
因为|x-1|>=0
所以|x-1|=3或1
x-1=3或1或-3或-1
x=4或2或-2或0
从最外面开始解。||||x-1|-1|-1|-1|=0说明|||x-1|-1|-1|=1
||x-1|-1|-1=1或-1
||x-1|-1|=2或0
||x-1|-1|=0时|x-1|=1,x=0或2
||x-1|-1|=2时|x-1|=-1(舍弃)或3,x=-2或4
所以答案是-2、0、2、4
x=4;-2;2....
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