\[3\frac{5^{\backslash 2}}{7} + \left( - 4\frac{3}{14} \right) =\]
\[= - \left( 3\frac{17}{14} - 3\frac{10}{14} \right) = - \frac{7}{14} =\]
\[= - \frac{1}{2} = - 0,5.\]