5 times what equals 81?

5 times what equals 81? In other words, what do you multiply by 5 to get 81? If "x" is "what" in the sentence, "5 times what equals 81?", then the equation to solve the problem is as follows:

5 • x = 81

Which can be written as:

5x = 81

To solve the equation above, we need to remove the 5 on the left side to make the x alone. To do that, we divide both sides by 5.

5x/5 = 81/5

5x/5 is x and 81/5 is 16.2 which means our equation will look like this:

x = 16.2

Thus, the answer to "5 times what equals 81?" is 16.2.

To double-check our work, multiply 16.2 by 5 to see that it equals 81. (Note that our answer on this page is rounded to 4 digits if necessary.)

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