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Laws of commutativity and associativity

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As for the addition, the following relation called the law of commutativity holds.

Let's see the reason why this relation holds.

In this way, the process of getting 3+5 shifts to the process of getting 5+3.
Thus, 3+5 = 5+3.

As for the addition, the following relation called the law of associativity also holds.