Need to find what X1, X2, and X3 are in this problem

Consider the following system of equations. xlx2+3)(3=2 2Xl+X2+2X3=6 2Xl2Xz+ X3=11 (a) Write a matrix equation that is equivalent to the system of linear equations. 1 J -1 J 3 J X1 2 2 y 1 1/ 2 y X2 = 6 -2 J -2 v 1 J X3 11 (b) Solve the system using the inverse of the coefficient matrix. (X1: X2: X3) = ( )