brayden615
brayden615 brayden615
  • 16-05-2021
  • Mathematics
contestada

x = -3y+6
2x+8y= -12

i cannot solve this equation but it needs to be solved by substitution.

Respuesta :

spectrojamz
spectrojamz spectrojamz
  • 16-05-2021

Answer:

Since x= -3y + 6

Substitute this into equation 2

You now have equation 2 as

2(-3y+6) + 8y = -12

-6y + 12 + 8y = -12

8y - 6y = -12 -12

2y = -24

y= -12

x = -3(-12) + 6

x= 36 + 6

x= 42.

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Аноним Аноним
  • 16-05-2021

Answer:

x + 3y = 6

2x + 8y = -12

substracting first equation from the second will give us

x - 5y = -18

subtracting the first one from this will give us

-8y = -24

y = 3

x = -3

Answer Link

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