解分式方程(5x-4)/(x-2)=(4x+10)/(3x-6)-1
问题描述:
解分式方程(5x-4)/(x-2)=(4x+10)/(3x-6)-1
答
此方程无解
答
(5x-4)/(x-2)=(4x+10)/3(x-2)-1
两边乘3(x-2)
3(5x-4)=4x+10-3(x-2)
15x-12=4x+10-3x+6
15x-12=x+16
14x=28
x=2
检验,当x=2时,分母3(x-2)=0
所以原方程无解
答
(5x-4)/(x-2)=(4x+10)/3(x-2)-1
两边乘3(x-2)
3(5x-4)=4x+10-3(x-2)
15x-12=4x+10-3x+6
15x-12=x+16
14x=28
x=2
经检验,x=2时分母x-2=0,是增根,舍去
所以方程无解
答
(5x-4)/(x-2)=(4x+10)/(3x-6)-1
(5x-4)/(x-2)=(4x+10)/3(x-2)-1 两边同时乘3(x-2)
3(5x-4)=4x+10-3(x-2)
15x-12-4x+3x-10-6=0
14x=28
x=2
因为分母不能为0,x-2不等于0,x不等于2
无解