$${\mathtt{6}}{\mathtt{\,\times\,}}\left({\mathtt{\,-\,}}{\mathtt{1}}{\mathtt{\,-\,}}{\mathtt{y}}\right) = {\mathtt{19}} \Rightarrow {\mathtt{y}} = {\mathtt{\,-\,}}{\frac{{\mathtt{25}}}{{\mathtt{6}}}} \Rightarrow {\mathtt{y}} = -{\mathtt{4.166\: \!666\: \!666\: \!666\: \!666\: \!7}}$$
.
) 