Answer
(2,3)
Explanation:
9x-7y=-3
-9x+15y=27
-------------------
8y=24
divide by 8 on both sides
y=3
now using substitution, you can now work out x
9x-7y=-3
9x-7(3)=-3
9x-21=-3
add 21 on both sides
9x=18
then divide my 9 on both sides
x=2
finito ; )