$$\underset{\,\,\,\,{\textcolor[rgb]{0.66,0.66,0.66}{\rightarrow {\mathtt{x}}}}}{{solve}}{\left(\begin{array}{l}{\mathtt{8}}{\mathtt{\,\small\textbf+\,}}{\mathtt{x}}={\mathtt{16}}\\
{\mathtt{x}}={\mathtt{16}}{\mathtt{\,-\,}}{\mathtt{8}}\\
{\mathtt{x}}={\mathtt{8}}\end{array}\right)}$$
$$\underset{\,\,\,\,{\textcolor[rgb]{0.66,0.66,0.66}{\rightarrow {\mathtt{x}}}}}{{solve}}{\left(\begin{array}{l}{\mathtt{8}}{\mathtt{\,\small\textbf+\,}}{\mathtt{x}}={\mathtt{16}}\\
{\mathtt{x}}={\mathtt{16}}{\mathtt{\,-\,}}{\mathtt{8}}\\
{\mathtt{x}}={\mathtt{8}}\end{array}\right)}$$