Question

6. Resolver el sistema
2x-y+3z = -5
x +y -2z = -3
x +2y + z = 2

Answer 1

Respuesta:

2x-y+3z = -5

x +y -2z = -3

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3x+z=-8

z=-8-3x

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x +y -2(-8-3x) = -3

x+y+16+6x=-3

7x+y= -19

y= -19 - 7x

______________

Answer 2

Respuesta:

Explicación paso a paso:

1)2x-y+3z=-5

--> y=2x+3z+5

2)x+y-2z=-3

-->x+(2x+3z+5)-2z=-3

-->3x+5+z=-3

-->z=-8-3x

3)x+2y+z=2

--> x+2(2x+3(-8-3x)+5)+(-8-3x)=2

-->x+4x-48-18x+10-8-3x=2

-->5x-21x-46=2

-->-16x=23

-->x=-23/16

Z=-8-3(-23/16)

Y=2(-23/16)+3(-8-3(-23/16))+5