Respuesta :

[tex]\begin{gathered} 3\mleft(n-9\mright)-2\mleft(n+4\mright)=6n \\ 3n-27-2n-8=6n \\ n-35=6n \\ n-35+35=6n+35 \\ n=6n+35 \\ n-6n=6n+35-6n \\ -5n=35 \\ \frac{-5n}{-5}=\frac{35}{-5} \\ n=-7 \end{gathered}[/tex]