what is the method for WolframAlpha to get the integer solution of indeterminate equation? [closed]

Question

To input " 1/x+1/y-1/xy^2 = 3/4 " in wolframalpha ，It can get the integer solution Integer solution: x = 2,y = 3 How it get?

Answer 1

integer solutions 1/x+1/y-1/xy^2 = 3/4

But to be honest if you plan on doing intensive math I would strongly consider looking into a math package like Mathematica or MatLab.