解方程:x-1/3[x-1/3(x-9)]=1/9(x-9)

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解方程:x-1/3[x-1/3(x-9)]=1/9(x-9)解方程:x-1/3[x-1/3(x-9)]=1/9(x-9)解方程:x-1/3[x-1/3(x-9)]=1/9(x-9)x-1/3(2/3x

解方程:x-1/3[x-1/3(x-9)]=1/9(x-9)
解方程:x-1/3[x-1/3(x-9)]=1/9(x-9)

解方程:x-1/3[x-1/3(x-9)]=1/9(x-9)
x-1/3(2/3x+3)=1/9x-1
x-2/9x-1=1/9x-1
x=1/3x
x=0