21^9 / 21^6 = 21^3
Step-by-step explanation:
Anytime you divide the exponents you subtract the exponents , so it would be 21^9 - 21^6 = 21^3
Another way you could figure this out is by writing them out like this:
21 + 21 + 21 + 21 + 21 + 21 + 21 + 21 +21 / 21 + 21 + 21 + 21 + 21 + 21
Then you would cancel out each one on top of each other so you would still have 21^3.
Whatever way works best for you
Hope this helps :)