Question

Is 3x+12-2x equivalent to x+12. Use two properties of operations to justify your answer

Answer 1

Explanation:

Commutative property: 3x+12-2x = 3x-2x+12

Substitution property: 3x-2x+12 = x+12

x+12 = x+12

Subtraction property: x-x+12 = x-x+12

Substitution property: 12 = 12