Question

Use the Associative Property of Addition to write an expression equivalent to (n + 2) + 7. Which expression is equivalent to (n + 2) + 7 by the Associative Property of Addition? O A. (n+7)+2 OB. n +(2+7) OC. 7+ (n +2) OD. n +2 +7 Click to select your answer. Save for Later

Answer 1

Answer:

The correct answer is OB.

Step-by-step explanation:

Let us recall the Associative Property of Addition: given three real numbers $a$, $b$ and $c$ the following equality holds:

$(a+b) + c = a+(b+c)$.

Let us remark that the Associative Property of Addition tells us that we can perform the sums in any order.  So,

$(n+2)+7 = n+(2+7)$.

In the other options there was used the Commutative Property of Addition.