Question

Which expression is equivalent to a + (c + 7)?

7 a c
a minus (c + 7)
(c + 7) minus a
(a + c) + 7

Answer 1

Answer: D. (a+c)+7
Step-by-Step Explanation:
Consider the association property of addition. The way you group addition won’t affect the sum. Therefore D. is the right answer.

Answer 2

(a+c)+7

Explanation:

this is called the Associative Property

(x+y)+z=x+(y+z)