SOLUTION: x − 2y + z = 4 y + 6z =-1 z = 2

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Question 850859: x − 2y + z = 4
y + 6z =-1
z = 2
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.x-+2y+%2B+z+=+4
2.y+%2B+6z+=-1
3.z+=+2
Back substitute from eq. 3 into eq. 2,
y%2B6%282%29=-1
y%2B12=-1
y=-13
Now into eq. 1,
x-2%28-13%29%2B2=4
x%2B26%2B2=4
x=-24