解方程:(5x-4)/(2x-4)-(2x+5)/(3x-6)=1/2
人气:389 ℃ 时间:2019-09-25 22:09:41
解答
(5x-4)/(2x-4)-(2x+5)/(3x-6)=1/2
(5x-4)/[2(x-2)]-(2x+5)/[3(x-2)]=1/2
两边乘以6(x-2)
3(5x-4)-2(2x+5)=3(x-2)
15x-12-4x-10=3x-6
8x=16
x=2
检验,x=2使得分母为0,舍去
所以原方程无解
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