$${\frac{{\mathtt{a}}}{{\mathtt{x}}}} = {\mathtt{1.2}}{\mathtt{\,\times\,}}{\mathtt{a}}$$ => $${\mathtt{1.2}}{\mathtt{\,\times\,}}{\mathtt{a}}{\mathtt{\,\times\,}}{\mathtt{x}} = {\mathtt{a}}$$ => $${\mathtt{x}} = {\frac{{\mathtt{1}}}{{\mathtt{1.2}}}} = {\frac{{\mathtt{5}}}{{\mathtt{6}}}}$$
$${\frac{{\mathtt{a}}}{{\mathtt{x}}}} = {\mathtt{1.2}}{\mathtt{\,\times\,}}{\mathtt{a}}$$ => $${\mathtt{1.2}}{\mathtt{\,\times\,}}{\mathtt{a}}{\mathtt{\,\times\,}}{\mathtt{x}} = {\mathtt{a}}$$ => $${\mathtt{x}} = {\frac{{\mathtt{1}}}{{\mathtt{1.2}}}} = {\frac{{\mathtt{5}}}{{\mathtt{6}}}}$$