SOLUTION: I'm very confused with this whole chapter so I need some help: solve each system: #12. this is all in() 9x+4y-z=0 3x-2y+4z=6

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: I'm very confused with this whole chapter so I need some help: solve each system: #12. this is all in() 9x+4y-z=0 3x-2y+4z=6       Log On


   

Question 77287This question is from textbook College Algebra
: I'm very confused with this whole chapter so I need some help:
solve each system:

#12. this is all in() 9x+4y-z=0
3x-2y+4z=6
6x-8y-3z=3
 This question is from textbook College Algebra

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
9x+4y-z =0
3x-2y+4z=6
6x-8y-3z=3
--------
Using matrix method A^-1B I get:
x=1/3
y=-1/2
z=1
========
Cheers,
Stan H.