haileym368 haileym368
  • 02-06-2021
  • Mathematics
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3x+4y=−2. 2x−4y=−8
Select the statement that correctly describes the solution to this system of equations.

3x4y2 2x4y8 Select the statement that correctly describes the solution to this system of equations class=

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 02-06-2021

Answer:

One solution at (-2,1)

Step-by-step explanation:

3x+4y=−2.

2x−4y=−8

Add the two equations together

3x+4y=−2

2x−4y=−8

------------------------

5x +0y = -10

Divide by 5

5x/5 = -10/5

x=-2

Now find y

2x-4y = -8

2*-2 -4y = -8

-4-4y = -8

Add 4 to each side

-4+4 -4y = -8+4

-4y = -4

Divide by -4

y = 1

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