Consider the following system of linear equations: 2x1+4x2-2x3 = 20 -x1 x2+2x3 = -14 -x1-4x2 = -7 Let A be the coefficient matrix and x the solution matrix to the system. Solve the system by first computing A-1 and then using it to find x. You can resize a matrix (when appropriate) by clicking and dragging the bottom-right corner of the matrix. 000 A-1000 000 0 x=0 0