Respuesta :

Answer:

[tex]z=2[/tex]

Step-by-step explanation:

[tex]z=n-7[/tex]

In this case, I'm assuming that you're trying to say that n = 9.

1. Substitute in 9 for n

[tex]z = (9)-7[/tex]

2. Combine like terms

[tex]z=9-7\\z=2[/tex]