Answer:
11
Step-by-step explanation:
Hello,
Given the original number n.
[tex]\large \boxed{n}[/tex]
Multiply the number by 9.
[tex]\large \boxed{9n}[/tex]
Add 99.
[tex]\large \boxed{9n+99}[/tex]
Divide this sum by 9.
[tex]\large \boxed{\dfrac{9n+99}{9}=n+11}[/tex]
Subtract the original number, n, from the quotient.
[tex]\large \boxed{n+11-n=11}[/tex]
Thank you.