SOLUTION: need help!please solve each system 3x+y+z=0 2x-y+z=0 2x+y+z=0

Question 339823: need help!please solve each system
3x+y+z=0
2x-y+z=0
2x+y+z=0
Found 2 solutions by Fombitz, stanbon:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
2.
3.
Add eq. 1 and eq. 2,

4.
.
.
.
Add eq. 2 and eq. 3,

5.
Subtract eq. 4 from eq. 3,

Then work backwards,

And finally,

.
.
.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
3x+y+z=0
2x-y+z=0
2x+y+z=0
---------
I used a matrix method to get:
x = 0
y = 0
z = 0
==========
Cheers,
Stan H.
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