jaylinehernandez jaylinehernandez
  • 26-01-2021
  • Mathematics
contestada

Solve the system of linear equations by substitution.
3x + y = -3 -2x + y =7

Respuesta :

kiley318 kiley318
  • 26-01-2021
both equations are equal to 0
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williamssk22
williamssk22 williamssk22
  • 26-01-2021

Answer:

(-2, 3)

Step-by-step explanation:

First solve one equation for y:

[tex]-2x+y=7\\y=7+2x[/tex]

Now we can substitute this equation into the other one:

[tex]3x+7+2x=-3[/tex]

Solve for x:

[tex]x=-2[/tex]

Now substitute this value into the equation [tex]y=7+2x[/tex]:

[tex]y=7+2x(-2)[/tex]

Solve for y:

[tex]7=3[/tex]

Now your solution is (-2,3)

Hope this helps! :)

Answer Link

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