use big m to solve the following linear programming model. Cleary state the optimal solution and the values for decision variables you obtained from the optimal tablaeu. Max Z $=3$x$1+$x$2+2$x$3$ s$.$t$.2$x$1+$ x$2+2$x$36,x1+x2+x3=4,x1+2x2+x36,x1,x2,x30$