The second day of junior high school· x-4/x-5 + x-8/x-9 = x-7/x-8 +x-5/x-6 Simple calculation method

The second day of junior high school· x-4/x-5 + x-8/x-9 = x-7/x-8 +x-5/x-6 Simple calculation method

x-4/x-5 + x-8/x-9 = x-7/x-8 +x-5/x-6 =1+ 1/(x-5) + 1 +1/(x-9)=1+ 1/(x-8)+ 1 +1/(x-6) 1/(x-5) +1/(x-9)=1/(x-8) +1/(x-6)1/(x-5)- 1/(x-8)=1/(x-6) -1/(x-9)-3/(x-5)(x-8)=-3/(x-6)(x-9)x^2-13x+40=x^2-15x+542...

(140/x)+(140/x-120)=14
(15/x)-(15/x+1)=1/2
thank you!

What process do you want
Just do that
（1）(140/x)+(140/x-120)=14
140+140-120x=14x
x=280/134
(2)(15/x)-(15/x+1)=1/2
15-15-x=x*1/2
x=0

Solve the equation to find X: M / X - {n / (x + 1)} = 0 (M is not equal to N, Mn is not equal to 0)

m/x- ｛n/（x+1）｝=0
Multiply both sides by X (x + 1) to get:
m(x+1)-nx=0
(m-n)x=-m
Divide both sides by (m-n) to get:
x=-m/(m-n)