$${\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{x}}}{{\mathtt{2}}}} = {\mathtt{10}}$$
$$\left({\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{x}}}{{\mathtt{2}}}}\right){\mathtt{\,-\,}}{\mathtt{5}} = \left({\mathtt{10}}\right){\mathtt{\,-\,}}{\mathtt{5}}$$
$${\frac{{\mathtt{x}}}{{\mathtt{2}}}} = {\mathtt{5}}$$
$${\mathtt{2}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{x}}}{{\mathtt{2}}}}\right) = \left({\mathtt{5}}\right){\mathtt{\,\times\,}}{\mathtt{2}}$$
$${\mathtt{x}} = {\mathtt{10}}$$
.$${\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{x}}}{{\mathtt{2}}}} = {\mathtt{10}}$$
$$\left({\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{x}}}{{\mathtt{2}}}}\right){\mathtt{\,-\,}}{\mathtt{5}} = \left({\mathtt{10}}\right){\mathtt{\,-\,}}{\mathtt{5}}$$
$${\frac{{\mathtt{x}}}{{\mathtt{2}}}} = {\mathtt{5}}$$
$${\mathtt{2}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{x}}}{{\mathtt{2}}}}\right) = \left({\mathtt{5}}\right){\mathtt{\,\times\,}}{\mathtt{2}}$$
$${\mathtt{x}} = {\mathtt{10}}$$