2/-7 + 7/5 ??
$${\frac{{\mathtt{2}}}{\left(-{\mathtt{7}}\right)}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{7}}}{{\mathtt{5}}}} = {\frac{{\mathtt{39}}}{{\mathtt{35}}}} = {\mathtt{1.114\: \!285\: \!714\: \!285\: \!714\: \!3}}$$ = $$1\frac{4}{35}$$