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If a and b are real numbers, then |a-b| is always, sometimes or never equal to |b-a| ?
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If a and b are real numbers, then |a-b| is always, sometimes or never equal to |b-a| ?

User Shabir Jan
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1 Answer

3 votes
Sometimes, because 1-1=1-1, but 2-5 doesn't equal 5-2.
User Franckspike
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