itzel118672 itzel118672
  • 05-02-2020
  • Mathematics
contestada

solve
-2x-y=1
y=3x-1

Respuesta :

xinjiajin xinjiajin
  • 05-02-2020

Answer:

x=-2/5

y=-1/5

Step-by-step explanation:

[tex]-2x-y=1\\y=3x-1[/tex]

Get the y variables onto 1 side

[tex]y+1=-2x\\y=3x-1[/tex]

Now shift the 1 over

[tex]y=-2x-1\\y=3x-1[/tex]

To solve for x, we can subtract the second equation from the first equation

[tex](y-y)=-2x-3x-1-1 = 0=-5x-2\\5x=-2\\x=-2/5[/tex]

Plug back into the first equation we found and solve for y

[tex]y=-2x-1\\y=-2(-2/5)-1\\y=4/5-1=-1/5[/tex]

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