$3x-y=3$ and $2(x+1)-3(x+1)-5=y$. If $(x,y)$, be the solution to the system of equations above and $y <0$ what is the value of y ?

Question

$\begin{array}{1 1} a)\;\large\frac{21}{4} \\ b)\;\large\frac{-21}{4} \\ c)\;\large\frac{11}{4} \\ d)\;\large\frac{-11}{4}\end{array}$