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Real numbers have several properties. You have already learned the commutative property and the associate property. Now, let's look at the identity property of addition. This is an easy one. Read the explanation for this property here and answer the question at the bottom of the page to show you understand it.
Source: Khan Academy, https://youtu.be/uXTRmzXlorI This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License.