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Question 373524: Augmented Matrix
x+3y-4z=5
-2x-5y+z=9
7x-y-z=-2
how do you solve for x,y,z?
Answer by dianitaa_328(8)   (Show Source):
You can put this solution on YOUR website! I only know how to work matrix in the calculator.
You go to matrix-edit-1
Then you put 3X4 because that is the amount of numbers.
You plug in the numbers as:
1 3 -4 5
-2 -5 1 9
7 -1 -1 -2
Then you get out by pressing 2nd-mode
Next Go back into matrix-math-B:rref-matrix-1-enter
and you get x,y,z=515, -125, 0.
Hope it helped.
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