Ответ:
\(1\frac{8}{17}=\frac{25}{17}\), \(2\frac{7}{11}=\frac{29}{11}\).
\(\frac{12}{17}+\frac{29}{11}=\frac{625}{187}\).
\(\frac{25}{17}:\frac{625}{187}=\frac{25}{17}\cdot\frac{187}{625}=\frac{11}{25}\).
Ответ: \(\frac{11}{25}\)
\(1\frac{8}{17}=\frac{25}{17}\), \(2\frac{7}{11}=\frac{29}{11}\).
\(\frac{12}{17}+\frac{29}{11}=\frac{625}{187}\).
\(\frac{25}{17}:\frac{625}{187}=\frac{25}{17}\cdot\frac{187}{625}=\frac{11}{25}\).
Ответ: \(\frac{11}{25}\)