What is the missing reason?

Question

2(x + 7) + 3x = 12 (given)
2x + 14 + 3x = 12 (?)
5x + 14 = 12 (simplify)
5x = -2 (subtraction)
x = - 2/5 (division)

What is the missing reason?


A)Addition

B)Subtraction

C)Reflexive Property

D)Distributive Property

Answer 1

The distributive property states that a(b + c) = ab + ac.  So, it is the distributive property.