Solving factorial equation with integer variables: Empty sym 0-by-1

I want to solve the equation by MATLAB.

So I have tried

syms x y integer
eqn=gamma(y+1)/(gamma(x-1)*gamma(y-x+1))==gamma(1341)/(gamma(660)*gamma(680));
[xsol,ysol]=solve(eqn,[x y])

but it gives me xsol = Empty sym: 0-by-1, ysol = Empty sym: 0-by-1.

How can I fix it?

Answer 1

[Alan Stevens]

Set x-2 = 659 and y-x = 679 for one solution,

and x-2 = 679 and y-x = 659 for another.