3. the unique properties for the additive, which is a real number 0 0
a = a = a 0 for all a. It is called additive identity 0
4. The property has an additive for the server
.For a real number for each have a real number a, a-a-a = 0 = (a-a) call-a river that's positive for an a
5. commutative properties for the additive of a and b
, if true, then a b = a
b
.
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