-54 is included in negative integer or rational nos.
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Rational numbers and Real numbers
12
-5 to a set number is -5
It belongs to the interval (25, 27.3), or [-20.9, 10*pi], and infinitely more such intervals.It also belongs to the set of rational numbers, real numbers, complex numbers and quaternions.
-29 is an element of the real number system. That is to say, it belongs to the set of real numbers.