Answer:
[tex]n = 9[/tex]
Step-by-step explanation:
Lesson : Finding variables
When trying to find a variable in an equation, you always have to get the variable alone.
n + 22 = 31
22 is with n , so we must get rid of it, subtract 22 from both sides:
n + 22 = 31
- 22 = -22
n = 9
