Question: Reverse the elementary row operations used in Example 2.9 to show that we can convert into I 2-4-4 0 -1 10 9 -5 0 0

Reverse the elementary row operations used in Example 2.9 to show that we can convert
Reverse the elementary row operations used in Example 2.9 to

into

Reverse the elementary row operations used in Example 2.9 to

I 2-4-4 0 -1 10 9 -5 0 0 -1 0 00 024 5255 4016 4023 2431 1221

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