The Rational Number that is Equal to its Negative

Explanation: Factually, zero is the rational number that is equal to its negative.

We can also deduce it as follows:

Let x be that rational number that is equal to its negative

This means that,

x= -x

and, x + x= 0

or, 2x= 0

Therefore, x= 0

This way we’ve proved that zero is that rational number which is equal to its negative.