Which equation demonstrates the commutative property of addition?

a. 2x+y=y+2x
b. 2x+y=2x+y
c. 2x+y=2(x+y)
d. 2x+y=y+(2+x)

3 answers

http://www.mathematicsdictionary.com/english/vmd/full/c/mutativepropertyofaddition.htm

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A is the answer
Right.