(1)(x-6)/(x-5)=6- 1/(5-x)
问题描述:
(1)(x-6)/(x-5)=6- 1/(5-x)
(2)(x-1)/(x-2) +3=4x/(x-3)解格式如下:
去分母
x=
把x= 代入 =
∴x= 是原方程的根(或增根)
答
(1)(x-6)/(x-5)=6- 1/(5-x)
x-6=6(x-5)+1
x-6=6x-29
解得 x=23/5
把x=23/5 代入 (x-6)/(x-5)=6- 1/(5-x)
7/2=7/2
左=右
∴x= 23/5是原方程的根
(2)(x-1)/(x-2) +3=4x/(x-3)
(x-1)(x-3)+3(x-3)(x-2)=4x(x-2)
x²-4x+3+3x²-15x+18=4x²-8x
11x=21
解得 x=21/11
把x=21/11 代入(x-1)/(x-2) +3=4x/(x-3)
-7=-7
左=右
∴x=21/11 是原方程的根