2x-1/2【x-1/2（x-1）=2/3（x-1） 求X， 去括号，移项，合并之类的写好
2x-1/2【x-1/2（x-1）=2/3（x-1） 求X， 去括号，移项，合并之类的写好
2x-1/2x+1/4(x-1)=2/3(x-1)
3/2x+1/4(x-1)=2/3(x-1)
18x+3(x-1)=8(x-1)
8(x-1)-3(x-1)=18x
5(x-1)-18x=0
5x-5-18x=0
-13x=5
x=-5/13
如果没有计算错误，应该就是这样了~~
2x-1/2[x-1/2(x-1)=2/3(x-1)怎么解
2x-1/2[x-1/2(x-1)=2/3(x-1)
12x-3[x-1/2(x-1)]=4(x-1)
12x-3x+3/2(x-1)=4x-4
24x-6x+3(x-1)=8x-8
24x-6x+3x-8x=-8+3
13x=-5
x=-5/13
2x-1/2[x-1/2(x-1)]=2/3(x-1) 怎么做？
。。。
原式可写为： (2x-1)*3(x-1)=2*2[x-1/2(x-1)]
即： 6(2x-1)(x-1)=4[x-1/2(x-1)]
两边同时*2(x-1)即： 12(2x-1)(x-1)(x-1)=8x(x-1)-4
3(2x-1)(x-1)(x-1)=2(x*x-x-1/2)=2(x-1)(x+1/2)
3(2x-1)(x-1)=2x+1
所以，6x*x-11x+2=0,即x=...........自己算去
2x-1/2｛x-1/2(x-1）｝=2/3（x-1）求x等于如题 谢谢了
写一下过程: 2X-1/4X-1/4=2/3X-2/3 21/12X-8/12X=1/4-2/3 13/12X=3/12-8/12 X=-5/13 注意答案是有负号的啊 过程有点简单~不好意思哈~~
2X-1/2[X-1/2(X-1)]=2/3(X-1)解得－11/156，好像不对吧!
2x-1/2[x-1/2(x-1)]=2/3(x-1)
2x-1/2[x-1/2x+1/2]=2/3x-2/3
2x-1/2[1/2x+1/2]=2/3x-2/3
2x-1/4x-1/4=2/3x-2/3
7/4x-1/4=2/3x-2/3
7/4x-2/3x=1/4-2/3
13/12x=-5/12
x=(-5/12)÷(13/12)
x=-5/13
1/16（8x-2）-1/2（x-1）去括号，合并同类项
=1/2x-1/8-1/2x-1/2=1/8-1/2=1/8-4/8=-3/8
6.7x-1/2[x-1/2(x-1)]=2/3(x-1) 求解
7x-1\2[x-1\2(x-1)]=2\3(x-1)
7x-1\2[x-1\2x+1\2]=2\3x-2\3
7x-1\2x+1\4x-1\4-2\3x=2\3
7x-(6\12-3\12+8\12)x=8\12+4\12
7x-11\12x=1
84\12-11\12=1\x
73\12=1\x
12x=73
x=73\12
x-1=2x-1/2-2x+1/3
答： X-1=2X-1/2-2X+1/3
即X-1=-1/2+1/3
即X=-1/2+1/3+1
X=1/2+1/3
X=5/6。
1/2[x-1/2(x-1)]=2/3(x-1) 怎么去分母？
两边乘6
3[x-1/2(x-1)]=4(x-1)
3x-3/2(x-1)=4(x-1)
两边乘2
6x-3(x-1)=8(x-1)
6x-3x+3=8x-8
8x-6x+3x=3+8
5x=11
x=11÷5
x=11/5
X^2-3X-2=0,求( x - 2x-1/x )÷(x-1)/(x^2-2x)
( x - 2x-1/x )÷(x-1)/(x^2-2x)
=(x²-2x+1)/x ×x(x-2)/(x-1)
=(x-1)²/x ×x/(x-2)/(x-1)
=(x-1)(x-2)
=x²-3x+2
=x²-3x-2 +4
∵x²-3x-2=0
∴原式=0+4
=4
