(3x-3)/(x-2)+(x-5)/(x-8)=(3x-9)/(x-4)+(x-3)/(x-6)
(3x-3)/(x-2)-(3x-9)/(x-4)=(x-3)/(x-6)-(x-5)/(x-8)
3[(x-1)/(x-2) -(x-3)/(x-4)]=(x-3)/(x-6)-(x-5)/(x-8)
左右同时通分得
3[(x-1)(x-4)-(x-3)(x-2)]/(x-2)(x-4)=[(x-3)(x-8)-(x-5)(x-6)]/(x-6)(x-8)
3(x²-5x+4-x²+5x-6)/(x-2)(x-4) =(x²-11x+24-x²+11x-30)/(x-6)(x-8)
3×(-2)/(x-2)(x-4)=(-6)/(x-6)(x-8)
1/(x-2)(x-4)=1/(x-6)(x-8)
(x-2)(x-4)=(x-6)(x-8)
x²-6x+8=x²-14x+48
-6x+14x=48-8
8x=40
x=5
x-2分之3x-3+(x-8)分之(x-5)=x-4分之3x-9+(x-6)分之(x-3) 求x的值
x-2分之3x-3+(x-8)分之(x-5)=x-4分之3x-9+(x-6)分之(x-3) 求x的值
数学人气:958 ℃时间:2020-04-15 05:47:49
优质解答
我来回答
类似推荐
猜你喜欢
- 1They have been divorced for many years.如果不对,正确的怎么表达?
- 2She likes singing ang she (c ) sing very well.
- 3应用题:新建一条高速公路,已建成80千米,剩下的比建成的四倍少20米.这条高速公路全长多少米?
- 4在深度负反馈时,放大器的放大倍数( )
- 5现代汉语中音高,音长,音强,音色与语音的关系?
- 6三位同学进行一分钟跳绳比赛,他们的平均成绩是160个,甲跳了154个,乙跳了161个,丙跳了多少个
- 7一质量为m,带正电且带电量为q的液滴以速度v沿与水平成45度角斜向上进入正交的匀强电场和匀强磁场叠加区域
- 8一周的总结,周记
- 9有一本书,甲买这本书要少2.4元,乙买这本书少了3.06!
- 102÷3x=7÷4y xy成什么比例(xy的关系式是