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Find the inverse matrix of [ 3 2 3 1 ] [ 2 1 0 0...

Find the inverse matrix of

[ 3 2 3 1 ]

[ 2 1 0 0 ]

[ 3 -5 1 0 ]

[ 4 2 3 1 ]

This is all one 4x4 matrix

Required first step add second row multiplied by (-1) to first row

try to not use fractions at all to solve this problem

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