Ответ:
\[2\frac{3}{17}=\frac{37}{17},\qquad 37:\frac{37}{17}=17.\]
\[17-17.8+2\frac{2}{17}=17-17.8+\frac{36}{17}=\frac{36}{17}-0.8=\frac{36}{17}-\frac45=\frac{58}{85}.\]
Ответ: \(\frac{58}{85}\).
\[2\frac{3}{17}=\frac{37}{17},\qquad 37:\frac{37}{17}=17.\]
\[17-17.8+2\frac{2}{17}=17-17.8+\frac{36}{17}=\frac{36}{17}-0.8=\frac{36}{17}-\frac45=\frac{58}{85}.\]
Ответ: \(\frac{58}{85}\).