作业帮3/2【4(x-1/3)-2/3】=2x
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3/2【4(x-1/3)-2/3】=2x
3/2【4(x-1/3)-2/3】=2x
3/2【4(x-1/3)-2/3】=2x
12(X-1/3)-2=4X
12X-4-2=4X
8X=6
X=3/4
1/2[x-1/3(x-1)]=3/4(2x+1)
两边同时乘以4，得
2[x-1/3(x-1)]=3(2x+1)
2(x-1/3x+1/3)=6x+3
4/3x+2/3=6x+3
两边同时乘以3，得
4x+2=18x+9
-14x=7
x=-1/2
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*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
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x-1+x+2+x/3+4x=77