| 1. |
-1x - 2y - 4z = 15
-6x + 3y + 8z = -18
2x - 6y + 5z = -123
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| 2. |
7x - 4y = -91
-8x - 3y = 51
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| 3. |
-3x + 5y - 2z = -7
-7x + 9y - 6z = 5
-4x - 8y + 1z = 20
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| 4. |
-5x + 9y = 37
-3x - 6y = -12
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| 5. |
2x - 1y = 2
4x + 7y = -32
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| 6. |
8x - 2y - 5z = 33
-4x + 7y - 9z = 152
-3x - 1y - 6z = 62
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| 7. |
-4x + 5y = -47
-9x - 2y = -119
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| 8. |
-8x + 1y - 6z = -118
6x - 1y + 7z = 110
-3x - 4y + 9z = 72
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| 9. |
8x - 2y - 5z = -110
-3x + 9y - 5z = -99
-6x - 7y - 1z = 85
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| 10. |
-8x + 2y = 58
-5x + 6y = 98
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| 11. |
-4x - 9y = -49
1x - 8y = -80
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| 12. |
-3x - 2y - 7z = -41
-3x - 7y + 2z = 15
1x - 5y + 8z = 59
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| 13. |
4x - 9y - 6z = -74
-1x + 4y + 2z = 19
7x - 8y - 3z = -85
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| 14. |
-5x + 6y = 4
-4x + 5y = 2
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| 15. |
-2x - 3y = 2
-1x - 7y = 34
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| 16. |
8x - 6y - 9z = -186
-6x + 9y + 2z = 161
5x - 8y - 7z = -160
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| 17. |
-3x + 4y = 1
-3x - 2y = 31
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| 18. |
6x + 9y = -66
-8x - 1y = 22
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