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The answer is x = 1/2 y = 2.

Using substitution means plugging in a different value. In this system, y has a value in x form and there is another equation.

To find the variables, first plug in y in x form to second equation to solve for x:

Remove the parentheses and set the denominators equal:

Combine left side:

Remove the denominators and simplify:

Turn the equation into standard form:

Factor it as a perfect square trinomial:

To solve for x:

So if x is 2/3, we can plug that in the first equation to find y:

Simplify:

So y is equal to 2.