Answer:
(9,3)
Explanation:
Use elimination to solve.
-2 (-3x + 3y = -18)
6x - 6y = 36
-6x - 3y = -63
The 6x and -6x are eliminated and you are left with -9y = -27 when you combine -6y and -3y, and 36 - 63.
y = 3
Then, substitute 3 into either equation to find x
-3x + 3(3) = -18
-3x + 9 = -18
-3x = -27
x = 9