Use the steps below to answer questions 4-5.

Step 1: 2/3 (15a+27b+9a-12a)

Step 2:10a+18b+6a-8a

Step 3:10a+18b+(6a-8a)

Step 4: 8a + 18b

4.Which property below is used between Steps 1 and 2?


5.Which property below is used between Steps 2 and 3?