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.
Regards, MrB
