Respuesta :

6(2n + 3) – 4n + 32 = 90
12n + 18 - 4n + 32 = 90
8n = 90 - 32 - 18
8n = 40
n = 40/8
n = 5
[tex]6(2n + 3) - 4n + 32 = 90\\ 12n+18-4n+32=90\\ 8n=40\\ n=5[/tex]