If `1/6! + 1/7! = x/8!` , find the value of x

1/8 -(2x)/4 + 1 = 0 , find the value of x

If x + 1/x = 8 and x - 1/x = -8 , then find the value of x^2 - 1/(x^2)

If (1)/(4!) + (1)/(5!)=(x)/(6!) , find the value of x.

Q.1- Find the value of x x-1=8 .

If A-=(6, 1), B-= (1, 3), C -=(x, 8) , find the value of x such that AB=BC

If x+1/x= 8 , then find the value of (5x)/(x^2+1-6x) यदि x+1/x= 8 है, तो (5x)/(x^2+1-6x) का मान ज्ञात कीजिए ।

If (1)/(6!) +(1)/(7!) = (x)/(8!) , find x.

If 1(2)/(3)+ ( 2)/( 7 ) xx ( x)/( 7) = 1( 1)/( 4) xx ( 2)/( 3) +( 1)/( 6) then find the value of x.