In the following example of "Simplifying an Expression", what reason would be used for step A?

Simplify the expression 3k + 7 + 2k and justify each step

3k + 7 + 2k = 3k + 2k + 7 A
= (3k+2k) +7 B
= (3+2)k+7 C
= 5k + 7 D
A. Addition
B. Commutative Property
C. Associative Property
D. Distributive Property

Question

In the following example of "Simplifying an Expression", what reason would be used for step A?

Simplify the expression 3k + 7 + 2k and justify each step

3k + 7 + 2k = 3k + 2k + 7                        A
                    = (3k+2k) +7                           B
                    = (3+2)k+7                             C
                    = 5k + 7                                  D
	A.	Addition
	B.	Commutative Property
	C.	Associative Property
	D.	Distributive Property

anonymous · Answer

Oct 29, 2010 - Simplify the expression 3k + 7 + 2k and justify each step 3k + 7 + 2k = 3k + 2k + 7 A = (3k + 2k) + 7 B = (3 + 2)k + 7 C = 5k +