x-0.25x=0.
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x-0.25x=0.x-0.25x=0.x-0.25x=0.x-0.25x=0.3750.75x=0.375x=0.50.75X=0.375X=0.5x-0.25x=0.375（1-0.25）x=0.
x-0.25x=0.
x-0.25x=0.
x-0.25x=0.
x-0.25x=0.375
0.75x=0.375
x=0.5
0.75X=0.375
X=0.5
x-0.25x=0.375
（1-0.25）x=0.375
0.75x=0.375
x=0.375/0.75
x=375/750
x=1/2=0.5
x=0.5过程楼上那位解释了
0.75X=0.375
X=0.5
x(1-0.25)=0.375
0.75x=0.375
x=0.5
x-0.25x=0.
X-0.25x=0.
X-0.25x=0.
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
x-0.25x=2.8+0.
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x-0.25x+1=10.4x+0.25x-1
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x-0.25x=48
x-35%x=0.25
x-1.75x=0.25
x-0.25x=15