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Hello from MrBillDoesMath!

Answer:  Commutative Property


Discussion:  The commutative property, generally, indicates that

a + b = b + a  for any number. In other words one can "flip around" the values being added and no change the result..  

Step 4:    5y + 10 + 6y

Step 5:    5y + 6y + 10


IN this problem the commutative property is applied to the boldfaced values shown above.


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