SOLUTION: how to solve: x+2z=5 -4x+6y=0 x-2z=9 and figuring what X,Y,and Z is

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Question 665382: how to solve:
x+2z=5
-4x+6y=0
x-2z=9
and figuring what X,Y,and Z is
Found 2 solutions by lynnlo, MathTherapy:
Answer by lynnlo(4176) About Me  (Show Source):
You can put this solution on YOUR website!
x=7,y=14/3,z=1
i did solve your problem with x,y,z

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

how to solve:
x+2z=5
-4x+6y=0
x-2z=9


4z = - 4 ------ Subtracting eq (iii) from eq (i)
z = %28-+4%29%2F4, or highlight_green%28z+=+-+1%29

x + 2(- 1) = 5 ------ Substituting – 1 for z in eq (i)
x – 2 = 5
x = 5 + 2, or highlight_green%28x+=+7%29

- 4(7) + 6y = 0 ------ Substituting 7 for x in eq (ii)
- 28 + 6y = 0
6y = 28
y = 28%2F6, or highlight_green%28y+=+4%262%2F3%29

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