Question

A student solves the following problem:

Problem:

2(x−3) + 3x = 19

Step 1: 2x − 6 + 3x = 19 Click and drag to move

Step2: (2x + 3x) −6 = 19 Click and drag to move

Step 3: 5x − 6 = 19 Click and drag to move

Step 4: 5x - 6 + 6 = 19 + 6 Click and drag to move

Step 5: 5x = 25 Click and drag to move

Step 6: x = 5 Click and drag to move

What property justifies going from step 3 to step 4?

Responses

Distributive Property
Distributive Property

Commutative Property of Addition
Commutative Property of Addition

Addition Property of Equality
Addition Property of Equality

Substitution Property
Substitution Property

Division Property of Equality

1 answer

Addition Property of Equality