sofydiaz596947
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  • 15-06-2019
  • Mathematics
contestada

Use addition to solve the linear system of equations. Include all of your work in your final answer.
-x-y=4
x+2y=4

Respuesta :

calculista
calculista calculista
  • 25-06-2019

Answer:

The solution is the point (-12,8)

Step-by-step explanation:

we have

-x-y=4 ----> equation A

x+2y=4 ----> equation B

Adds equation A and equation B and solve for y

-x-y=4

x+2y=4

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

-y+2y=4+4

y=8

Find the value of x

x+2y=4

x+2(8)=4

x=4-16

x=-12

therefore

The solution is the point (-12,8)

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