Answer:
15
Step-by-step explanation:
if 3x3 is 9 and 4x3 is 12 then 5x3 is 15
x=-2, y=5. (-2, 5).
15x-4y=-50
3x-2y=-16
---------------
-5(3x-2y)=-5(-16)
------------------------
-15x+10y=80
-------------------
6y=30
y=30/6
y=5
3x-2(5)=-16
3x-10=-16
3x=-16+10
3x=-6
x=-6/3
x=-2
