21 divided by what equals 13?

21 divided by what equals 13? In other words, you have 21 and you divide it by something and then you get 13. What is that something?

We will call that something "X". Here is the equation to find the solution:

		21
		X

= 13

First, multiply both sides by X to get rid of the X as denominator.

		21(X)
		X

= 13(X)

21 = 13X

Then, divide both sides by 13 to get X by itself as follows:

		21
		13

		13X
		13

1.615 = X

Thus, the answer to "21 divided by what equals 13?" is 1.615.

Note that our answers are rounded to the nearest thousandth if necessary. You can divide 21 by 1.615 to check that we got the right answer.

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