What is 21 less than 3?

Here we tell you how to calculate 21 less than 3 and give you the answer. If you deduct 21 from 3, you get the answer to 21 less than 3. Doing this, you find that the answer is:

-18

See how we did that? We simply subtracted 21 from 3. It is an easy and simple math problem. 21 less than 3 is the same as 3 minus 21. So, once again, the answer is -18.

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