The answer is below.
Work Step by Step
In order to solve a system of equations, we (1) isolate one variable in one of the equations. (In this case, it would be best to isolate the y in the lower equation.) We then (2) plug the value of this variable into the other equation. (In this case, we plug in the value of y into the upper equation.) We then (3) solve the upper equation for the value of y. Finally, we (4) use the value of y found to find the value of x.