Wie viel ist 7 11tel + 5,7?

Du kannst das auch gut auf dem  web2.0rechner   rechnen.

Oben rechts auf "Wissenschaftlich" klicken und dann auf "Bruchrechnung".

Gruß radix !

$${\frac{{\mathtt{7}}}{{\mathtt{11}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5.7}} = {\frac{{\mathtt{697}}}{{\mathtt{110}}}} = {\mathtt{6.336\: \!363\: \!636\: \!363\: \!636\: \!4}}$$

$${\frac{{\mathtt{7}}}{{\mathtt{11}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{7}}}{{\mathtt{10}}}}$$          Hauptnenner  110   

  $${\frac{{\mathtt{70}}}{{\mathtt{110}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{77}}}{{\mathtt{110}}}} = {\mathtt{5}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{147}}}{{\mathtt{110}}}} = {\mathtt{6}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{37}}}{{\mathtt{110}}}}$$

$${\mathtt{6}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{37}}}{{\mathtt{110}}}} = {\frac{{\mathtt{697}}}{{\mathtt{110}}}} = {\mathtt{6.336\: \!363\: \!636\: \!363\: \!636\: \!4}}$$

Gruß radix !