分式方程,求解 30
2024-04-02 广告
2014-12-19
(1)5x=x+3
4x=3
x=3/4
(2)x=3/2-2(x-1)
x=3/2-2x+2
塌州 3x=7/2
x=7/6
(3)2(2x+1)=4
4x+2=4
4x=2
磨旁 x=1/2
(4)[3(x^2-2x)-(x^2+2x)]/(x^4-4x^2)=0
3x^2-6x-x^2-2x=0
2 x^2-8x=0
x^2-4x=0
(x-4)x=0
x=4
(5)x(x-1)=(x+1)(x-3)
x^2-x=x^2-3x+x-3
x=-3
(6)x-3+x-2=-3
2x=2
x=1
(7)2x+1=5/6x
7/6x=-1
x=-6/7
(8)3/2(3x-1)-1=5/2
9/2x-3/2-1=5/2
9/2x=5
x=10/9
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