Ответ:
\[1,3=\frac{13}{10},\qquad \frac{7}{12}+1=\frac{19}{12}.\]
\[\frac{13}{10}:\frac{19}{12}=\frac{13}{10}\cdot\frac{12}{19}=\frac{78}{95}.\]
Ответ: \(\frac{78}{95}\).
\[1,3=\frac{13}{10},\qquad \frac{7}{12}+1=\frac{19}{12}.\]
\[\frac{13}{10}:\frac{19}{12}=\frac{13}{10}\cdot\frac{12}{19}=\frac{78}{95}.\]
Ответ: \(\frac{78}{95}\).