Consider the following linear programming $($ LP $)$ ?problem:

Minimise: Z $=2$ ?x $1+3$ ?x $2$

subject to: x $1+2$ ?x $2>=6$

$2$ ?x $1+$ ?x $2>=6$

x $1+$ ?x $2<=6$

x $1,$ ?x $2>=0$

$($ a $)$ ?Obtain a feasible solution to the LP problem using the Phase $1$ ?metho