Answer:
[tex]b=a-9[/tex]
Step-by-step explanation:
To solve this problem, we need to isolate the variable [tex]b[/tex] . We are given the equation [tex]9+b=a[/tex] . In order to isolate [tex]b[/tex] , we need to subtract 9 on both sides to maintain equality. We yield:
[tex]b=a-9[/tex]