
X-(1/2X+2)-{1/2[X-(1/2X+2)+2}=8怎么解,要解题步骤 5
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X-(1/2X+2)-{1/2[X-(1/2X+2)]+2}=8
X-1/2X-2-[1/2(X-1/2X-2)+2]=8
X-1/2X-2-(1/2X-1/4X-1+2)=8
X-1/2X-2-1/2X+1/4X+1-2=8
1/4X-3=8
1/4x=12
x=48
若X-(1/2X+2)-{1/2[X-(1/2X+2)+2]}=8
X-1/2X-2-[1/2(X-1/2X-2+2)]=8
X-1/2X-2-(1/2X-1/4X)=8
X-1/2X-2-1/2X+1/4X=8
-2+1/4X=8
1/4x=10
x=40
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