solving a system of equations in three variables
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1 Answer

3x-2y+z=4
5x+2y+z=24
-x+y-z=-4

 

3x-2y+z=4
-x+y-z=-4
-----------
2x-y=0
2x=y

 

5x+2y+z=24
-3x+2y-z=-4
-----------
2x+4y=20
5y=20

 

x=2
y=4
z=6
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