Saturday, May 4, 2013

Write an equivalent expression using a commutative property xy + 3

Commutative - means move. It means that over addition (or multiplication) we can rearrange the terms and the value of the expression will not change. Notice that commutation does not work for subtraction and division. This is because they are what we call derived operations. 

Commutative property of addition:

xy%2B3=3%2Bxy

...for multiplication

+xy%2B3=yx%2B3

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