text: what is 4 (y-a) (7+4)*6+9+4+4+4+4+4+4+4445-5-4-5-46-6-46-45454*5454(a-f)??   i'm sorry but you have used some notation there that i don't understand "+*+" and in addition the series of sumations that you wrote down doesn't seem to have a clear pattern, so i can not give you a definitive answer for your question without more information.