waas ist:
$${\frac{{\mathtt{5}}}{{\mathtt{13}}}}{\mathtt{\,\times\,}}{\mathtt{\,-\,}}\left({\frac{{\mathtt{10}}}{{\mathtt{6}}}}\right){\mathtt{\,\times\,}}{\mathtt{\,-\,}}\left({\frac{{\mathtt{13}}}{{\mathtt{15}}}}\right)$$1 aufgabe
$${\mathtt{\,-\,}}{\frac{{\frac{{\mathtt{3}}}{{\mathtt{8}}}}}{{\mathtt{\,-\,}}\left({\frac{{\mathtt{9}}}{{\mathtt{15}}}}\right)}}$$2 aufgabe
(-2)hoch3*(-1)hoch223
3 aufgabe
$${\frac{{\mathtt{5}}}{{\mathtt{13}}}}{\mathtt{\,\times\,}}{\mathtt{\,-\,}}\left({\frac{{\mathtt{10}}}{{\mathtt{6}}}}\right){\mathtt{\,\times\,}}{\mathtt{\,-\,}}\left({\frac{{\mathtt{13}}}{{\mathtt{15}}}}\right) = {\frac{\left({\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{10}}{\mathtt{\,\times\,}}{\mathtt{13}}\right)}{\left({\mathtt{13}}{\mathtt{\,\times\,}}{\mathtt{6}}{\mathtt{\,\times\,}}{\mathtt{15}}\right)}} = {\frac{{\mathtt{10}}}{{\mathtt{18}}}}$$
$${\frac{{\mathtt{10}}}{{\mathtt{18}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{15}}}{{\mathtt{24}}}} = {\frac{{\mathtt{40}}}{{\mathtt{72}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{45}}}{{\mathtt{72}}}} = {\mathtt{\,-\,}}{\frac{{\mathtt{5}}}{{\mathtt{72}}}}$$
$${\frac{{\mathtt{5}}}{{\mathtt{13}}}}{\mathtt{\,\times\,}}{\mathtt{\,-\,}}\left({\frac{{\mathtt{10}}}{{\mathtt{6}}}}\right){\mathtt{\,\times\,}}{\mathtt{\,-\,}}\left({\frac{{\mathtt{13}}}{{\mathtt{15}}}}\right) = {\frac{\left({\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{10}}{\mathtt{\,\times\,}}{\mathtt{13}}\right)}{\left({\mathtt{13}}{\mathtt{\,\times\,}}{\mathtt{6}}{\mathtt{\,\times\,}}{\mathtt{15}}\right)}} = {\frac{{\mathtt{10}}}{{\mathtt{18}}}}$$
$${\frac{{\mathtt{10}}}{{\mathtt{18}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{15}}}{{\mathtt{24}}}} = {\frac{{\mathtt{40}}}{{\mathtt{72}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{45}}}{{\mathtt{72}}}} = {\mathtt{\,-\,}}{\frac{{\mathtt{5}}}{{\mathtt{72}}}}$$
Ich bin mir nicht sicher, ob bei der Aufgabenstellung Multiplikationszeichen und 2 Klammern fehlen. Oder sind das zwei getrennte Aufgaben. Das ist nicht eindeutig.