45(X+0.5)=50(X-0.
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45(X+0.5)=50(X-0.45(X+0.5)=50(X-0.45(X+0.5)=50(X-0.45(X+0.5)=50(X-0.5)45x+45x0.5=50x-50x0.545x+22.5=
45(X+0.5)=50(X-0.
45(X+0.5)=50(X-0.
45(X+0.5)=50(X-0.
45(X+0.5)=50(X-0.5)
45x+45x0.5=50x-50x0.5
45x+22.5=50x-25
50x-45x=22.5+25
5x=47.5
x=9.5
45(X+0.5)=50(X-0.
x+ x+(x*50%)=1.5X?
50x（x-0.5)=50x(9.5-0.5)
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
3.14*（0.5x)(0.5x)*2x=50
解方程：45x+0.5=50x-0.5
x÷45-0.5=x÷50+0.5
45x+10 =50X（x-1）
50x+45x=47.
50x+45(27-x)=1290
50-x=45+x．
x/45-x/50=4
45x+10=50(x-1)
45-x=50+x的过程
45x-30=50x+30
x+3x+x-2+x+x+50%x=188 求x
（X+X)+(X-X)+(X*X)+(X/X)=100
0.5X+120+0.3X=X