Answer:
B
Step-by-step explanation:
-3x+3y=-18 ➡3y=3x-18 ➡y=x-6
5x-2y=9➡-2y=-5x+9➡y=2.5x-4.5
2.5x-4.5=x-6
1.5x=-1.5
x=-1
y=-1-6
y=-7
