integers are closed under subtraction, are integers numbers closed under subtraction, are odd integers closed under subtraction, integers closed under subtraction, integers are not closed under subtraction, is a set of integers closed under subtraction
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integers are closed under subtraction
are integers numbers closed under subtraction
are odd integers closed under subtraction
integers closed under subtraction
integers are not closed under subtraction
is a set of integers closed under subtraction
integers are closed under subtraction, are integers numbers closed under subtraction, are odd integers closed under subtraction, integers closed under subtraction, integers are not closed under subtraction, is a set of integers closed under subtraction
