Решите уравнение (−2x−5)(0,3x+2,7)=0.

Ответ:

\[( - 2x - 5)(0,3x + 2,7) = 0\]

\[- 2x - 5 = 0\ \ \ \ \ \ \ \ \ 0,3x + 2,7 = 0\]

\[- 2x = 5\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 0,3x = - 2,7\]

\[x = - 2,5\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x = - 9\]

\[Ответ:x = - 9;\ \ x = - 2,5.\]