x-0.4x=0.
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x-0.4x=0.x-0.4x=0.x-0.4x=0.x-0.4x=0.30.6x=0.3x=0.3÷0.6x=0.5原式等于0.6x=0.3x=0.3/0.6=0.5x（1－0.4）＝0.3x＝0.
x-0.4x=0.
x-0.4x=0.
x-0.4x=0.
x-0.4x=0.3
0.6x=0.3
x=0.3÷0.6
x=0.5
原式 等于 0.6x=0.3 x=0.3/0.6=0.5
x（1－0.4）＝0.3
x＝0.3÷0.6＝0.5
x-0.4x=0.3
0.6x=0.3
x=0.3÷0.6
x=0.5
x-0.4x=0.3
0.6x=0.3
x=0.5
x-0.4x=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一0.4x=0.
x^2=（0.4X）（0.
（X+X)+(X-X)+(X*X)+(X/X)=100
x-0.8x=0.4x=?
解方程:X=7(X-12) X-0.4X=0.
16^X - 12^X -9^X = 0.求X.
(98-X)+(100-X)+X=X/0.
x-0.25x=0.
x+4.5x=0.
X-0.25x=0.
4.8x-x=0.
X-0.25x=0.
2.2x-x=0.
120X-X=0.
1.2x-x=0.
X-0.48X=0.