Answer:
-b is rational
Explanation:
a - b is also a rational number.
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,
and
we determine a - b as, rational
Simplify, we have,
Which is a rational number.
Thus, a - b is also