Respuesta :

MrRoyal

The properties used to rewrite the expressions are

  • (8 + 4) + 12 = (4 + 8) + 12 ⇒ Associative property
  • (8 + 4) + 12 = 8 + (4 + 12)⇒ Associative property

How to determine the properties?

The expressions are given as

(8 + 4) + 12 = (4 + 8) + 12

(8 + 4) + 12 = 8 + (4 + 12)

The associative property of expression states that

(x + y) + z = x + (y + z)

This means that the properties used to rewrite the expressions are associative property

Read more about associative property at

https://brainly.com/question/491384

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