SOLUTION: Solve the system of equations 2x-2y-2z=3,x+4y-z=2, and -2x-8y+2z=-4. I tried to plot it on the graph but could not solve for z. Thank you I appreciate your help.
Algebra ->
Systems-of-equations
-> SOLUTION: Solve the system of equations 2x-2y-2z=3,x+4y-z=2, and -2x-8y+2z=-4. I tried to plot it on the graph but could not solve for z. Thank you I appreciate your help.
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Question 976079: Solve the system of equations 2x-2y-2z=3,x+4y-z=2, and -2x-8y+2z=-4. I tried to plot it on the graph but could not solve for z. Thank you I appreciate your help. Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! 2x-2y-2z=3
x+4y-z=2
-2x-8y+2z=-4
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2x -2y-2z=3
-2x-8y+2z=-4
----------------- Add
-10y = -1
y = 1/10 ********************
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x+4y-z=2 Eqn A
-2x-8y+2z=-4 Eqn B
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Eqn B is -2 times Eqn A
---> dependent, no unique solutions for x or z.
