What number is 30 less than 21

What number is 30 less than 21 - solution with step by step explanation

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What is 30 less than 21?


We are looking for a new number which is 30 less than 21.
We will get the new number by subtracting 30 from 21.
We write it down as:
21-30=-9



And finally the solution for: What number is 30 less than 21?
is -9

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