Answer: y = -2
Step-by-step explanation:
2x + 4y = 2 → -2(2x + 4y = 2) → -4x - 8y = -4
4x + y = 18 → 1(4x + y = 18) → 4x + y = 18
-7y = 14
[tex]y=\dfrac{14}{-7}\\[/tex]
y = -2
