Maximize: x $+2$x$,$ Subject to: x$,-2$x$,121-2$x$2-$x$3=1$x$1-$x$2+$x$3=3$x $+$ x$-$x$21$xxx $20123123$ Prepare the tableu for the first phase of the problem Complete the first phase of the problem Determine if the first phase is optimal, and the resulting basic feasible solution. If the first phase is not optimal, explain why. If the first phase is optimal, complete the second phase of the problem. Report the optimal solution, including the variable values and objective function value.