Answer:
n = -17.
Step By Step Explanations:
1) Divide both sides by -9.
[tex]n + 6 = - \frac{99}{9} [/tex]
2) Simplify 99/9 to 11.
[tex]n + 6 = - 11[/tex]
3) Subtract 6 from both sides.
[tex]n = - 11 - 6[/tex]
4) Simplify -11 - 6 to -17.
[tex]n = - 17[/tex]
Therefor, the answer is n = -17
