Respuesta :
Answer:
x=2, y = -8
Step-by-step explanation:
y=-2x-4
y=2x-12
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Subtract the two equations
y=-2x-4
-y=-2x+12
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0 = -4x +8
Subtract 8 from each side
-8 = -4x+8-8
-8 = -4x
Divide by -4
-8/-8 = -4x/-4
2 =x
Then solve for y
y = -2x-4
y = -2(2) -4
y = -4-4
y = -8
Answer:
(2, -8)
Step-by-step explanation:
Add the two equations to solve. The x-values are cancelled out. Solve for y.
y = -2x - 4
+ y = 2x - 12
2y = -16
y = -8
Now, plug in the y-value into one of the equations to solve for x.
y = 2x - 12
-8 = 2x - 12
(-8) + 12 = (2x - 12) + 12
4 = 2x
(4)/2 = (2x)/2
x = 2
The solution is (2, -8).