Question

Is `-24+a` rational or irrational?

Answer 1

It depends on whether `a` is rational or irrational.

Explanation:

Let `A in RR = -24 +a`

Since `-24` is an integer it is rational but takes no part in determining the rationality or otherwise of `A`

Hence: Whether or not `A` is rational depends on the rationality or otherwise of `a`

`:. A` is rational if `a` is rational and `A` is irrational if `a` is irrational