Respuesta :
Answer:
a - b is also a rational number.
Step-by-step explanation:
Given : a and b be rational numbers.
We have to check whether a - b rational or irrational.
Since, Given a and b be rational numbers.
Let us consider any two rational numbers,
[tex]a=\frac{2}{3}[/tex] and [tex]b=\frac{1}{3}[/tex]
we determine a - b as,
[tex]a-b=\frac{2}{3}-\frac{1}{3}[/tex]
Simplify, we have,
[tex]a-b=\frac{2-1}{3}=\frac{1}{3}[/tex]
Which is a rational number.
Thus, a - b is also a rational number.
