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please help me understand properties. Ex: identity, inverse, distributive, and communitive

label Mathematics
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please help me learn and memorize the properties.

Oct 21st, 2017

o is identity element for addition. 2+0=2


-2 is the additive inverse of 2

1 is the identity element for multiplication. 3*1=3

3*(1/3) =1

(1/3) is the multiplicative inverse of 3

2(3+5) =2*3+2*5 =6+10=16

The above is distributive property of multiplication over addition.

2*3 =3*2 =6

The above is commutative property.

Oct 7th, 2014

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