Minimize g=2x+3y\displaystyle {g}={2}{x}+{3}{y}
Subject to4x+y21\displaystyle {4}{x}+{y}\ge{21}
3x+y18x+3y14x0y0\displaystyle {\left.\begin{array}{ccc} {3}{x}+{y}&\ge&{18}\\{x}+{3}{y}&\ge&{14}\\{x}&\ge&{0}\\{y}&\ge&{0}\end{array}\right.}


Minimum is at