Name the property of congruence that justifies the statement if xy = wx then wx = xy ?

I believe below are the choices that can be found else where. 

a.symmetric property 
b.transitive property 
c.reflexive property 
d.none of these 

The answer is c which is reflexive property. The Reflexive Property states that for every real number x , x = x . Symmetric Property. The Symmetric Property states that for all real numbers x and y , if x = y , then y = x . Transitive Property.

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,