试用简便方法解方程1/2(X-1/2(X-1)+1)=2/3(X-1)1/2(x-1/2(x-1)-1+2)=2/3(x-1)1/

1/2(x-1/2(x-1)-1+2)=2/3(x-1)
1/2((x-1)-1/2(x-1)+2)=2/3(x-1)
1/4(x-1)+1=2/3(x-1)
5/12(x-1)=1
x-1=12/5
x=17/5

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左边外面的括号打开， 1/2(X-1) - 1/4(X-1) + 1 = 2/3(X-1), 1=(2/3 - 1/4)(X-1)=(5/12)(X-1)
X-1 = 12/5, X= 17/5

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