SOLUTION: what sets does 9/3 and 21/7 belong to?
Algebra.Com
Question 646489: what sets does 9/3 and 21/7 belong to?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
They are both the quotient of two integers, so they are rational. Since they are rational they are real, and therefore they are also complex albeit with a zero imaginary part coefficient. But reduced to lowest terms, both of them are the same positive integer. So one could make the case that not only are they integers, but they are positive integers, whole numbers, and natural numbers. In fact, the only set from which they are excluded is the irrationals.
John
My calculator said it, I believe it, that settles it
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