What is 30 less than 9?

Here we tell you how to calculate 30 less than 9 and give you the answer. If you deduct 30 from 9, you get the answer to 30 less than 9. Doing this, you find that the answer is:

-21

See how we did that? We simply subtracted 30 from 9. It is an easy and simple math problem. 30 less than 9 is the same as 9 minus 30. So, once again, the answer is -21.

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What is 30 less than 10?
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