7 + 2(x - 3) + 5x a. 7 + 2x - 6 + 5x Distributive Property
7 + 2x +(-6) + 5x Definition of Subtraction
b.7+(-6) + 2x + 5x Associative Property of Addition
c. 7+(-6) +(2+5) Distributive Property
d. 7+ (-6) + 7x Addition
1 + 7x
Addition
7x + 1
Commutaive Property of Addition
2.
The expression 7 + 2(x - 3) + 5x is simplified correctly in the correct order. Which of the steps has an incorrect justification?
step d
step c
step b
step a