Respuesta :
[tex](n + 8) + (n - 12)[/tex]
Expanding the terms,
[tex]n + 8 + n - 12[/tex]
Grouping like terms,
[tex]n + n - 12 + 8[/tex]
Evaluating the terms,
[tex]2n - 4[/tex]
[tex](n + 8) + (n - 12)[/tex]
Expanding the terms,
[tex]n + 8 + n - 12[/tex]
Grouping like terms,
[tex]n + n - 12 + 8[/tex]
Evaluating the terms,
[tex]2n - 4[/tex]