21 divided by what equals 18?

21 divided by what equals 18? In other words, you have 21 and you divide it by something and then you get 18. What is that something?

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

		21
		X

= 18

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

		21(X)
		X

= 18(X)

21 = 18X

Then, divide both sides by 18 to get X by itself as follows:

		21
		18

		18X
		18

1.167 = X

Thus, the answer to "21 divided by what equals 18?" is 1.167.

Note that our answers are rounded to the nearest thousandth if necessary. You can divide 21 by 1.167 to check that we got the right answer.

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