21 divided by what equals 15?

21 divided by what equals 15? In other words, you have 21 and you divide it by something and then you get 15. What is that something?

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

		21
		X

= 15

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

		21(X)
		X

= 15(X)

21 = 15X

Then, divide both sides by 15 to get X by itself as follows:

		21
		15

		15X
		15

1.4 = X

Thus, the answer to "21 divided by what equals 15?" is 1.4.

Note that our answers are rounded to the nearest thousandth if necessary. You can divide 21 by 1.4 to check that we got the right answer.

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