0.2/3(x-1)-2.5=0.5/(0.4-2x)-7.5
1、0.3X-0.4X=0.5 2、5X-2.5X+3.5X=-18 3、X-2/5X=-3+6
x-2/0.2-x+1/0.5=3 x=?
求1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1 其中x=12/13
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
1-0.5x/0.3-2/3x=0.3x/0.2x+1
求x的值 2.5:x=7.5:0.5 x= 2.4x+28.8=48 x= x-3分之2x=1.8 x= (1+5分之3
(X+4)/0.2-(X-3)/0.5=0.2 x-(x-1)/6=3-(x+2)/3 x/12-(2x-1)/20={
3x+0.5x=4.2 4x-2.16=1.2 x-0.2x=16 2x-4x[这个x是乘】2.5=3.6 3x+5x=
2-(1-x)=-3、3(x-3)=2x-1,0.4x-3(20-0.2x)=3,
解方程:2- x+5/6=x- x-1/3,0.1-0.2x/0.03-1=0.7-x/0.4
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2