ich bin radlos
hab über die sommerferien fast alles verlernt
was mit bruch zutun hat
$${\frac{{\mathtt{15}}}{{\mathtt{20}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{16}}}{{\mathtt{20}}}} = {\frac{{\mathtt{31}}}{{\mathtt{20}}}} = {\mathtt{1.55}}$$
$${\frac{{\mathtt{21}}}{{\mathtt{28}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{20}}}{{\mathtt{28}}}} = {\frac{{\mathtt{41}}}{{\mathtt{28}}}} = {\mathtt{1.464\: \!285\: \!714\: \!285\: \!714\: \!3}}$$
$${\frac{{\mathtt{15}}}{{\mathtt{20}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{16}}}{{\mathtt{20}}}} = {\frac{{\mathtt{31}}}{{\mathtt{20}}}} = {\mathtt{1.55}}$$
$${\frac{{\mathtt{21}}}{{\mathtt{28}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{20}}}{{\mathtt{28}}}} = {\frac{{\mathtt{41}}}{{\mathtt{28}}}} = {\mathtt{1.464\: \!285\: \!714\: \!285\: \!714\: \!3}}$$