+15 $${\mathtt{8}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{6}}{\mathtt{\,\times\,}}{\mathtt{x}} = {\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}$$
$${\mathtt{\,-\,}}{\mathtt{19}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}} = -{\mathtt{16}}$$
$${\mathtt{\,-\,}}{\frac{{\mathtt{16}}}{{\mathtt{2}}}} = {\mathtt{x}}$$
$${\mathtt{x}} = -{\mathtt{8}}$$
.+15 $${\mathtt{8}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{6}}{\mathtt{\,\times\,}}{\mathtt{x}} = {\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}$$
$${\mathtt{\,-\,}}{\mathtt{19}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}} = -{\mathtt{16}}$$
$${\mathtt{\,-\,}}{\frac{{\mathtt{16}}}{{\mathtt{2}}}} = {\mathtt{x}}$$
$${\mathtt{x}} = -{\mathtt{8}}$$
