When you have an expression consisting of several terms added together, and they are not all like terms, and there are like terms separated by unlike terms, you use the commutative law of addition to rearrange the terms so that the like terms are next to each other.
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It mean like Commutative Property of Addition
No idea what the communative property is. The commutative property for addition is that a + b = b + a. Similarly, for multiplication, a*b = b*a
This is called the commutative property of multiplication. Like addition, the order of the numbers does not matter: the product is the same.Compare this with subtraction and division which are not commutative.
I believe you may be thinking of the commutative property. If so, it's a property of a binary operator (one that takes 2 arguments, like addition) that means changing the order of the arguments doesn't change the outcome. For example, addition is commutative: 1 + 3 = 4 and 3 + 1 = 4. This works regardless of the arguments. Subtraction, on the other hand, is NOT commutative: 1 - 3 = -2 and 3 - 1 = 2. In some cases (when the arguments are both the same) changing the order wouldn't matter, but the commutative property means that it works for any arguments, so subtraction doesn't have it.
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