21 times what equals 8?

21 times what equals 8? In other words, what do you multiply by 21 to get 8? If "x" is "what" in the sentence, "21 times what equals 8?", then the equation to solve the problem is as follows:

21 • x = 8

Which can be written as:

21x = 8

To solve the equation above, we need to remove the 21 on the left side to make the x alone. To do that, we divide both sides by 21.

21x/21 = 8/21

21x/21 is x and 8/21 is 0.381 which means our equation will look like this:

x = 0.381

Thus, the answer to "21 times what equals 8?" is 0.381.

To double-check our work, multiply 0.381 by 21 to see that it equals 8. (Note that our answer on this page is rounded to 4 digits if necessary.)

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