virijuarez04 virijuarez04
  • 10-10-2019
  • Mathematics
contestada

Can anyone help me with question #9?

Can anyone help me with question 9 class=

Respuesta :

crisscodigo7 crisscodigo7
  • 10-10-2019

Answer:

 x +3y -  3z = 12

3x  -  y + 4z = 0

-x + 2y -    z = 1  

D = - 25

Dx = - 75

Dy = - 25

Dz = 50

x = Dx / D = - 75/(-25) = 3

y = Dy / D = -25 / (-25) =1

z = Dz / D = 50 /(-25) = -2

Answer:  x=3 ,  y =1 , z = - 2

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