If $\large\frac{x}{2}$$=11-\large\frac{y}{2},$ and $\large\frac{y}{2}$$=x+5$ what is the value of $x+3y$ ?

Question

$\begin{array}{1 1} a)\;x=4,y=18 \\ b)\;x=-4,y=18 \\ c)\;x=-2,y=18 \\ d)\;x=4,y=-18 \end{array}$