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Mathematics 21 Online
OpenStudy (anonymous):

9 - 4 = 4 - 9 what property is this

OpenStudy (anonymous):

That's not a property. The two sides are not equal to each other.

OpenStudy (anonymous):

this is not correct !!!!!!!

OpenStudy (anonymous):

how can 9-4 =4-9 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

OpenStudy (anonymous):

well thank you

OpenStudy (anonymous):

That is no property. How is 9-4 equivalent to the value of 4-9?

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