Question

2 + (a + b) = (2 + a) + b is an example of which algebraic property?

Distributive Property

Associative Property of Addition

Commutative Property of Addition

Symmetric Property

Answer 1

it is the Associative Property of Addition

a+b+c = a+(b+c) = (a+b)+c

Answer 2

when you think of associative, think grouping (the parenthesis)
when you think of commutative, think order --> 2+3 = 3+2