Consider the matrix A= 1 3 4 2 5 6 -2 -7 -9 (a) (5 points) Solve the system A = b, where =

Consider the matrix A= 1 3 4 2 5 6 -2 -7 -9 (a) (5 points) Solve the system Až = b, where ñ = (x1, X2, X3) and 5 = (1, -2,4). (b) (5 points) Use Gauss-Jordan elimination to find the inverse of A.