3 (3b + 4) - 6
( )+ ( )-6
- 6
+
1 1
-
+

Answer:
[tex]3(3b + 4) - 6 \\ 3(3b) + 3(4) - 6 \\ 9b + 12 - 6 \\ 9b + 6[/tex]
I hope I helped you^_^