It depends on what you are asked to do. If you need the values of the two variables, they are given to you.
x = 2 and y = 3
If it's asking you to solve for x or y, that just means get either by itself.
Solve for x.
y(x/y) = (2/3)y
x = (2/3)y
To solve for y, continue the above.
(3/2)x = (3/2)(2/3)y
y = (3/2)x