The answer to the first problem is (-3,7). The answer to the second problem is (-2,3).
Explanation:
I got this answer, because x is -3 in the first question, so you make all of the x' s in the problem a -3. Then y is 7 so you would make all the y' s a 7. From there you would solve the problem, and you would get -27=-27 and 23=23.