Answer:
x = 0
Explanation:
when you plug in x as 0, you would have
0 + 3y = 12
0 = 8 - 2y
3y = 12
3y divided by 3 is y
12 divided by 3 is 4
y = 4
plug y in for the second equation
0 = 8 - 2(4)
0 = 8 - 8
this is why x = 0
hope that made sense, sorry if it didn't, i don't know how to explain it online