Question

What property is shown by the equation?


Column A ---1.–(–33 + 18) = 33 + (–18)
---2. –10 + (–15) = –15 + (–10)
---3. 4 + (29 + 16) = 4 + (16 + 29)
---4. –12 + (12 + 27) = (–12 + 12) + 27
Column B
A.commutative property
B.associative property
C.opposite of a sum property