Question 1002638
.
You just have y expressed via  x  from the 2nd equation,  y = x + 3.
Substitute it into the first equation.  You will get 


x + (x+3) = 3.


Hence,  2x = 0, x = 0.


Then  y = x+3 = 0+3 = 3.


<U>Answer</U>. &nbsp;x = 0, y = 3.