(0.3X+0.4X)÷2÷0.3+(0.3X+0.4X)÷2÷0.4=2X+2 怎么解
(0.3X+0.4X)÷2÷0.3+(0.3X+0.4X)÷2÷0.4=2X+2 怎么解
3÷(9x-60-2x)=0.3| 6x-3.2=4x| 0.6x+5+0.4x=25.5| 20+8(4-x)=20|
[(x+2)/(x²+2x)-(x-1)/(x²-4x+4)]÷(x-4)/x
先化简(x平方-4x+4)/(x平方-2x)÷(x-4/x)
解方程:1+0.4x=0.2(x+10) 2.x÷2=x+200
0.3+0.3x=0.39 x= 2x-1.5x=7.6x x= 0.36x÷0.3=1.2 x=
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2
解方程 x-0.4x=0.3 3x+x+1.8=5 2(x+1)=
计算:(1+1/x)·x²-2x+1/x²-1;(x²/x-1-2x/1-x)÷x/x-1
X -1.8=4 X - 2=15 1.6X=6.4 X÷7=0.3 X÷3=2.1用关系式怎么解
x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算
计算:[(x²-2x+1)/(x²-1)]÷[(x-1)(x²+x)]-x