" If "(x-1)/(x+1)=(7)/(9)," then "x=?

if (x-1)/(x+1)=(7)/(9)" then the value of "x

If (1)/(8!)+(3)/(7!)=(x)/(9!) then x is:

If sqrt(1+(7)/(9))=1+(x)/(3) , then x =

Let f(x)=(2x+7)/(9) and g(x)=(9x+5)/(7) and we define h(x)=f^(-1)(x)+g^(-1)(x)-5x . If (h^(-1)(x)=(ax+b)/(c)) where c is a prime then the value of 5a-2c-b is equal to

If (x-1)(x-3)(x-5)(x-7)=9, find the value of x.

If f(x)={(x-1)/(2x^(2)-7x+5), when x!=1-(1)/(3), when x=1, prove that f'(1)=-(2)/(9)

If 1/(7!)+(1)/(9!)= (x)/(10!), find x

If 1/(7!)+(1)/(9!)= (x)/(10!), find x

If (x+(1)/(x))=3, then (x^(2)+(1)/(x^(2)))=?( a )7( b) 9(c)10(d)27