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Answer:

An expression can be written in rational number by writing 1 in the denominator then it will become a fraction and hence a rational number.

Step-by-step explanation:

Rational numbers are the number that can be expressed in fractions and  written in [tex]\frac{p}{q}[/tex] form where p and q are integers and [tex]q\neq 0[/tex].

An expression can be written in rational number by writing 1 in the denominator then it will become a fraction and hence a rational number.

Example - 4 which is a negative integer can be written as rational number by writing 1 in denominator

[tex]\frac{-4}{1}[/tex] thus, it become fraction and hence a rational number.

To write the expression in the rational form, the denominator of the fraction should be 1.

What is Fraction?

Fraction is a part of the whole. For example, if we cut the whole cake into 5 equal parts the single part comes out to be in the fraction of [tex]\dfrac{1}{5}[/tex] which depicts the 5th part of a complete cake.

The fraction can be written in the form of [tex]\dfrac{p}{q}[/tex] where, [tex]q\neq 0[/tex]

So, in the fraction, if the denominator is equal to one it will give us a rational number

In a simple way, we can say that the rational number is the fraction with a denominator equal to 1.

For example,

[tex]\dfrac{4}{1} = 4[/tex]

[tex]\dfrac{8}{1} = 8[/tex]

So, an expression can be written in rational form by writing is a fraction with a denominator of 1.

To know more about Fractions:

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