Answer: I think the answer is x=16
Step-by-step explanation:
y=-16 x=4
+16 +4
so in order to get a positive number i added 16 to y and 4 to x which equals
y=0 x=8
y=0 x= 8
+16 +4
I added another 16 to y and another 4 to x = y=16, x=12
y= 16 x=12
+16 +4
I added another 16 to y and another 4 to x = y= 32 x= 16
so the answer for x is 16
hopefully i got it right