1 times what equals 21?

1 times what equals 21? In other words, what do you multiply by 1 to get 21? If "x" is "what" in the sentence, "1 times what equals 21?", then the equation to solve the problem is as follows:

1 • x = 21

Which can be written as:

1x = 21

To solve the equation above, we need to remove the 1 on the left side to make the x alone. To do that, we divide both sides by 1.

1x/1 = 21/1

1x/1 is x and 21/1 is 21 which means our equation will look like this:

x = 21

Thus, the answer to "1 times what equals 21?" is 21.

To double-check our work, multiply 21 by 1 to see that it equals 21. (Note that our answer on this page is rounded to 4 digits if necessary.)

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1 times what equals 22?
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