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Select the correct reasons for statements 1 and 3 to complete the proof.




Prove: 5x + 9 • x • 3 = 32x


  1. 5x + 9 • x • 3 = 5x + 9 • 3 • x 1. ?
  2. 5x + 9 • x • 3 = 5x + 27x 2. Multiplication
  3. 5x + 9 • x • 3 = 32x 3. ?




Associative Property of Addition, Addition




Associative Property of Multiplication, Addition




Commutative Property of Multiplication, Addition




Commutative Property of Multiplication, Multiplication