What number is 84 less than 39?

When solving a question like "What number is 84 less than 39?", take a close look at what it is really asking.

You have the number 39 and you are looking for a number that is 84 less than 39. In other words, if you have 39 and take away 84, then how many do you have?

You guessed it! This is a subtraction problem. 39 is the minuend and 84 is subtrahend and the answer we are looking for is the difference.

Therefore, to solve "What number is 84 less than 39?", you subtract 84 from 39 like so:

39 - 84 = -45

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