I want to solve multivariable equation

I'd like to solve the expression below about x.

x/y*((1+(r-1)/2*y^2)/(1+(r-1)/2*x^2))^((r+1)/2*(r-1))=a/b

x = ...

Answer 1

[Ted Shultz]

This is how you would sove this:

syms x y r a b

eqn =(x/y*((1+(r-1)/2*y^2)/(1+(r-1)/2*x^2))^((r+1)/2*(r-1))) == a/b

solve(eqn,x)

but I didn't find a solution...