Answer:
0.206 is rational
Step-by-step explanation:
The answer's 2.2
I'm sorry I can't show you, but LaTex doesn't allow you to show short division.
You can find out how to do it here, on Wikipedia's page. https://www.wikiwand.com/en/Short_division
We want to rewrite the following equation

With d as a function of the other terms. Let's start by subtracting n from both sides.

Now, let's divide both sides by 9.

And this is our final answer.