After this year summer break, I'm going to grade 11. I (really) need help on this certain question. Simplify: 3n + 4001 + 3n + 4001 + 3n + 4001
3n + 4001 + 3n + 4001 + 3n + 4001 =
(3n + 4001) + (3n + 4001) + ( 3n + 4001) =
3 ( 3n + 4001) =
9n + 12003
+183 
