Is -12 a rational number?

1 Answer
Trevor Ryan.
Mar 29, 2016

Yes

Explanation:

By definition, the set #QQ# of rational numbers is basically all the numbers that can be written as an integer over an integer, ie all the fractions.
#QQ={m/n | m,n in ZZ, n!=0}#.

Since #-12# can be written as #-12/1#, it implies it is a rational number, ie #-12 in QQ#.

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