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
Substitution Property
Substitution Property
Division Property of Equality
Division Property of Equality
Commutative Property of Addition
Commutative Property of Addition
Addition Property of Equality
Addition Property of Equality
Distributive Property