Commutatitive property: a + b = b + a Associative property: (a + b) + c = a + (b + c) Although illustrated above for addition, it also applies to multiplication. But not subtraction or division!
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commutative, associative, distributive
Both union and intersection are commutative, as well as associative.
9s2+3t+s2+1
In the case of addition: Commutative property: a + b = b + a Associative property: (a + b) + c = a + (b + c) Note that (1) the commutative property involves two numbers; the associative property involves three; and (2) the commutative property changes the order of the operands; the associative property doesn't. Repeatedly applying the two properties allow you to rearrange an addition that involves several numbers in any order.
They are the associative property, distributive property and the commutative property.