Question 376520
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Hi
Solving using elimination of the y variable
x+2y =4 
x-2y=-8
2x = -4
x = -1
Solving for y
x+2y =4 
-1 + 2y = 4
2y = 5
y = 5/2
CHECKING our Anwer
-1 + 2*(5/2) = -1 + 5 = 4