Lamaahmed Lamaahmed
  • 26-11-2019
  • Mathematics
contestada

x-4y=-21
8y-x=45
Solve the system
(X,y)=

Respuesta :

BasketballEinstein
BasketballEinstein BasketballEinstein
  • 27-11-2019

Answer:

[tex]\displaystyle (3, 6)[/tex]

Step-by-step explanation:

{x -4y = −21

{8y - x = 45

_________

[tex]\displaystyle \frac{4y}{4} = \frac{24}{4} \\ \\ [/tex]

[tex]\displaystyle y = 6[/tex][Plug this back into both equations above to get the x-coordinate of 3]; [tex]\displaystyle 3 = x[/tex]

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