作业帮2(2x-1)/0.01-2.5=0.2-20x/0.2-3.5
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2(2x-1)/0.01-2.5=0.2-20x/0.2-3.5
2(2x-1)/0.01-2.5=0.2-20x/0.2-3.5
2(2x-1)/0.01-2.5=0.2-20x/0.2-3.5
2(2x-1)/0.01-2.5=0.2-20x/0.2-3.5
(4x-4)/0.01-2.5=0.2-100x-3.5
400x-400-2.5=0.2-100x-3.5
400x+100x=400+2.5+0.2-3.5
500x=400+2.5+0.2-3.5
500x=399.2
x=0.7984
这个数有点怪,你是不是在原式中少了括号这类啊
4-6x/0.01-2.5=0.2-20x/0.2-3.5 4-600x-2.5=0.2-100x-3.5 1.5-600x=-3.3-100x -500x=-4.8 x=4.8/500 x=0.0096
(x-1)+(x+2)+0.2x+2x=46
3道简单的分式方程,1.3/(1-x^) = 2/(1+2x+x) - 5/1-2x+x^2.5x/(x^+x-6) + (2x-5)/(x^-x-12) = (7x-10)/(x^-6x+8)3.(x+1)/(x+2) + (x+6)/(x+7) = (x+2)/(x+3) + (x+5)/(x+6)
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x平方-x+2=2x/x+1
(X+1)X(X+2)X(X+3)=504
化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2
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
19.8x+0.2x=2.5×2
X+1/0.2-2X=0.1x+0.2/0.03:
2(x+1)-(3-x)=2(1.5x-2.5)
x-2/0.2-x+1/0.5=3 x=?
(x+1)/0.3-2x=(0.1x+0.2)/0.05
x-2/0.2-x+1/0.5=3求x
(x/x-2)+(2/x*2+2x)-(x+6/x*2-4)化简,=x^2/x(x-2)+(2x-4)/x(x^2-4)-(x^2+6x)/x(x^2-4)=x^2/x(x-2)-(x+2)/x(x-2)=(x-2)(x+1)/x(x-2)=(x+1)/x
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)