SOLUTION: 2x + y - 2z = -1 3x - 3y - z = 5 x - 2y + 3z = 6

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Question 1146813: 2x + y - 2z = -1
3x - 3y - z = 5
x - 2y + 3z = 6
Found 2 solutions by josgarithmetic, Alan3354:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
This was done without rechecking: 
2  1  -1  -1
3  -3  -1 5
1 -2  3   6

0  5  -8  -13
0  3  -10 -13
1 -2  3   6
then switch rows

1  -2  3  6
0  5  -8 -13
0  3  -10 -13

1  -2  3  6
0  15 -24 -29
0  15 -50 -65

E3-E3-E2;
E2+8E3 and  E1-3E3

1 -2 0 3
0  5 0 -5
0  0 1  1

1 -2  0  3
0  1  0 -1
0 0  1  1

then E1=E1+2E2

1  0  0  1
0  1  0 -1
0  0  1  1

system%28x=1%2Cy=-1%2Cz=1%29

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
2x + y - 2z = -1
3x - 3y - z = 5
x - 2y + 3z = 6
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