Question

Give the reason (property) for each step in the simplification.
8(a+b)-3a
(8a+8b)-3a
(8b+8a)-3a
8b+(8a-3a)
8b+5a

Answer 1

I think I figured out a few of them
the fist is given
second is distributive
third is Commutative
and I am not sure about the rest

Answer 2

associative
8a-3a = (8-3)a = 5a distributive again