LittleRunner2247 LittleRunner2247
  • 10-06-2020
  • Mathematics
contestada

4x-y+ 2z=-1

Given the system -x+2y + 5z = 2, which is true?

|-x+y-3z= 1

Respuesta :

martin58853 martin58853
  • 12-06-2020

Answer:

Y = 0

X= 1/2

Z = -1/2

Step-by-step explanation:

4x-y+ 2z=-1

-x+y-3z= 1

-x+2y + 5z = 2

Solving simultenously

Y= 4x + 2z -1

Y =1+ 3z+ x

Y =x/2 -( 5z/2) - 1

Equating y will give two equations

3x-z = 2

3x + 11z = -4

Subtracting the equations

-12z =6

Z= -1/2

Substituting z

3x +1/2 = 2

3x = 3/2

X= 1/2

Substituting x and z to find y in

-x+y-3z= 1

-1/2 + y +3/2 = 1

Y = 1-1

Y = 0

Answer Link
21junhak 21junhak
  • 09-11-2020

Answer: b) is answer

Step-by-step explanation:

Answer Link

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