1/(X-7)-1/(X-5)=1/(X-6)-1/(X-4)
移项
1/(X-7)+1/(X-4)=1/(X-6)+1/(X-5)
通分
(2x-11)/[(x-7)(x-4)]=(2x-11)/[(x-6)(x-5)]
则
(1)2x-11=0
x=5.5
(2) (x-7)(x-4)=(x-6)(x-5)
x^2-11x+28=x^2-11x+30
28=30
无解.
∴x=5.5
1/(X-7)-1/(X-5)=1/(X-6)-1/(X-4)
移项
1/(X-7)+1/(X-4)=1/(X-6)+1/(X-5)
通分
(2x-11)/[(x-7)(x-4)]=(2x-11)/[(x-6)(x-5)]
则
(1)2x-11=0
x=5.5
(2) (x-7)(x-4)=(x-6)(x-5)
x^2-11x+28=x^2-11x+30
28=30
无解.
∴x=5.5