-3x-5=10 what is x

$$\mathrm{\ }$$ $$\underset{\,\,\,\,{\textcolor[rgb]{0.66,0.66,0.66}{\rightarrow {\mathtt{x}}}}}{{solve}}{\left(\begin{array}{l}{\mathtt{\,-\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{5}}={\mathtt{10}}\\ {\mathtt{\,-\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}={\mathtt{10}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}\\ {\mathtt{\,-\,}}\left({\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}\right)={\mathtt{15}}\\ {\mathtt{\,-\,}}{\frac{{\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}}{{\mathtt{3}}}}={\frac{{\mathtt{15}}}{{\mathtt{3}}}}\\ {\mathtt{x}}={\mathtt{5}}\end{array}\right)}$$