What is the reciprocal of 21/1? Here we will define reciprocal of 21/1, and show you how to calculate the reciprocal of 21/1 in fraction form and decimal form.
The reciprocal of 21/1 is a fraction or a number that when multiplied by 21/1 is equal to 1. To get the reciprocal of 21/1 based on that definition, we can make the following equation where "R" is the reciprocal of 21/1.
(21/1) × R = 1
When we solve for R, we get the answer to the reciprocal of 21/1 as a fraction as follows:
(21/1) × R = 1
R = 1/21
Reciprocal of 21/1 = 1/21
You can check that the answer is correct by confirming that 21/1 times the reciprocal of 21/1 is equal to 1, like this:
21/1 × 1/21 = 1
To find the decimal answer to the reciprocal of 21/1, you divide the numerator of the reciprocal by the demoninator of the reciprocal, like this:
1 ÷ 21 ≈ 0.047619047619
Reciprocal of 21/1 ≈ 0.047619047619
Tip: As you may have inferred from our tutorial above, you can quickly get the reciprocal of any fraction, such as 21/1, by switching the numerator and the denominator.
Reciprocal of a fraction
Do you need the reciprocal of another fraction? No problem! Please enter another fraction below.
Reciprocal of 21/2
Here is the next fraction on our list that we have calculated the reciprocal of.