Question

What property is shown by the equation?




Column A


Column B












--- ABC


1.


(34 + 11) + 9 = (11 + 34) + 9









--- ABC


2.


25 + (–15 + 4) = (25 + (–15)) + 4









--- ABC


3.


–(–21 + 8) = 21 + (–8)









--- ABC


4.


–30 + (–16) = –16 + (–30)




A.


commutative property


B.


associative property


C.


opposite of a sum property

Answer 1

a + b = b + c

Commutative Property

Answer 2

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

Associative Property

Answer 3

thanx