题目
解分式方程6x-1/3x+2=4x-7/2x-5 2x/x-1+2/x+2=2(不需要写检验)
提问时间:2020-07-30
答案
(6x-1)/(3x+2)=(4x-7)/(2x-5)
(6x-1)(2x-5)=(4x-7)(3x+2)
12x² -32x+5=12x²-13x-14
-32x+13x=-14-5
-19x=-19
x=1
2x/(x-1)+2/(x+2)=2
2x(x+2)+2(x-1)=2(x-1)(x+2)
2x²+4x+2x-2=2x²+2x-4
6x-2x=-4+2
4x=-2
x=-1/2
(6x-1)(2x-5)=(4x-7)(3x+2)
12x² -32x+5=12x²-13x-14
-32x+13x=-14-5
-19x=-19
x=1
2x/(x-1)+2/(x+2)=2
2x(x+2)+2(x-1)=2(x-1)(x+2)
2x²+4x+2x-2=2x²+2x-4
6x-2x=-4+2
4x=-2
x=-1/2
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