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-2x – y + z = 1
x + 2y - 4z = 3
4x + 3y - 7z = -8

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Explanation:

Hope this helps....Cheerz!

-2x – y + z = 1 x + 2y - 4z = 3 4x + 3y - 7z = -8-example-1
User AterLux
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