SOLUTION: I feel like I've tried every possible solution and can not find the correct answer. "Which of the following points is a solution to the system?" 5x+3y+3z=-13 8x+6y-8z=-2 3x

Question 429804: I feel like I've tried every possible solution and can not find the correct answer.
"Which of the following points is a solution to the system?"
5x+3y+3z=-13
8x+6y-8z=-2
3x-y-8z=-12
I know you are suppose to do the addition method but every pairing I've tried does not come out even. I'm stumped!
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
5x+3y+3z=-13
8x+6y-8z=-2
3x-y-8z=-12
-----------------
I used the Matrix Method on a TI-84 to get:
x = -5
y = 5
z = -1
==========
Cheers,
Stan H.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
(-5,5,-1) from an online solver

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