What is the shadow price of constraint $3?$

minz$=x_1+x_2-4x_3$

s$.$t$.x_1+x_2+2x_{3}9$

$x_1+x_2-k_{3}2$

$-x_1+x_2+x_{3}4$

$x_1,x_2,x_{3}0$

$\backslash$table$[[z,x_1,x_2,x_3,s_1,s_2,s_3,RHS$