解方程:1/x-7-1/x-5=1/x-6-1/x-4解方程:1/x-7-1/x-5=1/x-6-1/x-4
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解方程:1/x-7-1/x-5=1/x-6-1/x-4解方程:1/x-7-1/x-5=1/x-6-1/x-4解方程:1/x-7-1/x-5=1/x-6-1/x-4解方程:1/x-7-1/x-5=1/x
解方程:1/x-7-1/x-5=1/x-6-1/x-4解方程:1/x-7-1/x-5=1/x-6-1/x-4
解方程:1/x-7-1/x-5=1/x-6-1/x-4
解方程:1/x-7-1/x-5=1/x-6-1/x-4
解方程:1/x-7-1/x-5=1/x-6-1/x-4解方程:1/x-7-1/x-5=1/x-6-1/x-4
1/x-7-1/x-5=1/x-6-1/x-4
1/x-7+1/x-4=1/x-6+1/x-5
(x-4+x-7)/(x-7)(x-4)=(x-5+x-6)/(x-6)(x-5)
(2x-11)/(x^2-4x-7x+28)=(2x-11)/(x^2-5x-6x+30)
(2x-11)(x^2-4x-7x+28)=(2x-11)(x^2-5x-6x+30)
(2x-11)(x^2-11x+28-x^2+11x-30)=0
(2x-11)=0
x=11/2
1/x-7-1/x-5=1/x-6-1/x-4
1/x-7+1/x-4=1/x-6+1/x-5
(x-4+x-7)/(x-7)(x-4)=(x-5+x-6)/(x-6)(x-5)
(2x-11)/(x^2-4x-7x+28)=(2x-11)/(x^2-5x-6x+30)
(2x-11)(x^2-4x-7x+28)=(2x-11)(x^2-5x-6x+30)
(2x-11)(x^2-11x+28-x^2+11x-30)=0
(2x-11)=0
x=11/2
方程1/(X-7 )- 1/(X-5)=1/(X-6 )- 1/(X-4) 即1/(X-7 )+1/(X-4)=1/(X-6 )+1/(X-5) 解为x=（7+4）/（7-5）=（5+6
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