21 divided by what equals 5?

21 divided by what equals 5? In other words, you have 21 and you divide it by something and then you get 5. What is that something?

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

		21
		X

= 5

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

		21(X)
		X

= 5(X)

21 = 5X

Then, divide both sides by 5 to get X by itself as follows:

		21
		5

		5X
		5

4.2 = X

Thus, the answer to "21 divided by what equals 5?" is 4.2.

Note that our answers are rounded to the nearest thousandth if necessary. You can divide 21 by 4.2 to check that we got the right answer.

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