SOLUTION: x+y+-2z=-3
w+2x+-y =2
2w+4x+y+-3z=
-2 w+-4x+-7y+-z=-19
Algebra.Com
Question 903202: x+y+-2z=-3
w+2x+-y =2
2w+4x+y+-3z=
-2 w+-4x+-7y+-z=-19
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Use Cramer's Rule,
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