Question

Which statement is true for the expression 6a + 15b − 4a − 8c?
Answer
It can be written as 6a + 15b − 8c − 4a by using addition property of equality.
It can be written as 6a − 4a + 15b − 8c by using distributive property of addition.
It can be written as 6a + 15b − 8c − 4a by using distributive property of addition.
It can be written as 6a − 4a + 15b − 8c by using commutative property of addition.

Answer 1

It can be written as 6a − 4a + 15b − 8c by using commutative property of addition.
BTW, do you know about the commutative property?