x+(1+1/6)x=78
(13/6)x=78
x=36
x+(1+1/6)X=78
x+7/6x=78
13/6x=78
x=78÷13/6
x=78X6/13
x=36
1/(X-7)+1/(X-1)=1/(X-6)+1/(X-2)
1/(X-1)-1/(X-2)=1/(X-6)-1/(X-7)
-1/(X-1)(X-2)=-1/(X-6)(X-7)
(X-1)(X-2)=(X-6)(X-7)
X^2 -3X+2=X^2 -13X+42
10X=40
X=4
经检验,X=4是方程的解
如果帮到您的话,(右上角采纳
x+(1+1/6)X=78
6/6x+7/6x=78
13/6x=78
x=78÷13/6
x=78X6/13
x=36