Originally Posted by

**sktsasus**
For the first ones, the first row is being multiplied by 2 and then multiplied by 1/2, so I multiplied the identity matrix's first row by those amounts.

For the second ones, the second and third row are switched for both so I switched the second and third row of the identity matrix for both as well.

For the third ones, the first row is being added to 4 times the second row and -4 times the second row. So I switched the the first and second row of the identity matrix and multiplied it by 4 and -4 respectively. I have a feeling that this is where I'm going wrong but I'm not sure why.

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