\[\left( \frac{4^{\backslash 2}}{9} + \frac{1}{18} \right) \cdot (5,5 - 7) =\]
\[= \frac{8 + 1}{18} \cdot ( - 1,5) = \frac{9}{18} \cdot \left( - \frac{3}{2} \right) =\]
\[= \frac{1}{2} \cdot \left( - \frac{3}{2} \right) = - \frac{3}{4} = - 0,75.\]