\[(0,64 + 0,9)(65,7 - 69,2) = 1,54 \cdot ( - 3,5) =\]
\[= - \frac{154 \cdot 35}{100 \cdot 10} = - \frac{77 \cdot 7}{100} = - \frac{539}{100} = - 5,39\]