\[( - 2x - 5)(0,3x + 2,7) = 0\]
\[- 2x - 5 = 0\ \ \ \ \ \ \ \ \ 0,3x + 2,7 = 0\]
\[- 2x = 5\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 0,3x = - 2,7\]
\[x = - 2,5\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x = - 9\]
\[Ответ:x = - 9;\ \ x = - 2,5.\]