1/x-1/y=1/x.1/y;(x,y khác 0)

To solve this equation, we can start by multiplying both sides of the equation by xy to eliminate the denominators:

xy * (1/x - 1/y) = xy * (1/x) * (1/y)

y - x = 1

Now, we can rearrange the equation to isolate y:

y = x + 1

So the solution to the equation is y = x + 1, where x and y are not equal to 0.