If you could explain what property is illustrated in this equation:
5(3x+y)=5(3x+1y)

Question

kinggeorge · Answer

Well the only thing that changes is that you have $1y$ instead of $y$. So what's the property that tells you that $1y=y$?

karatechopper · Answer

Identity? I have no clue what the property is. :/ Trying so hard to remember but nothing comes to mind

karatechopper · Answer

Multiplicative identity?

kinggeorge · Answer

I don't have a specific "property" come to mind except for the existence of the multiplicative identity. Which happens to be denoted by 1.

karatechopper · Answer

alright, that then confirms what I am thinking :)

kinggeorge · Answer

Excellent.

karatechopper · Answer

One more quick question tho..
on 
(19a+11b)+0=19a+11b

would that be additive identity?

kinggeorge · Answer

That's what I would say.

karatechopper · Answer

Ok thanks!!! If anyone else could add their two cents, I would appreciate that as well :)