\[\left( 3\frac{5}{14} - 2\frac{3}{4} \right) \cdot \left( - 3\frac{5}{17} \right) =\]
\[= \left( 3\frac{10}{28} - 2\frac{21}{28} \right) \cdot \left( - \frac{56}{17} \right) =\]
\[= \left( 2\frac{38}{28} - 2\frac{21}{28} \right) \cdot \left( - \frac{56}{17} \right) =\]
\[= \frac{17}{28} \cdot \left( - \frac{56}{17} \right) = - 2\]