Transform `[(1,-1,2) ,(2,1,3),(3,2,4)]` into an upper triangular matrix by suitable row transformations

Transform [(1,2,4),(3,-1,5),(2,4,6)] into an upper triangular matrix by using suitable row transformations.

Transform [[2,1,5],[4,3,1],[6,3,4]] into upper triangular matrix by using suitable row transformations.

Transform [[1,-1,22,1,33,1,33,2,4]] into an upper transformations

Transform [[1,2,-4],[0,-4,8],[72,5,7]] into a lower triangular matrix by using column transformations.

Convert [[1,-1],[2,3]] into an identity matrix by suitable row transformatiions.

Transform [[4,-1],[5,-2]] into a corresponding Identity matrix using row transformations

Show that the matrix [{:(3,1,4),(2,0,-1),(5,2,1):}] is non-singular and reduce it to the identiy matrix by elementary row transformations.