What is the reciprocal of 21/7? Here we will define reciprocal of 21/7, and show you how to calculate the reciprocal of 21/7 in fraction form and decimal form.
The reciprocal of 21/7 is a fraction or a number that when multiplied by 21/7 is equal to 1. To get the reciprocal of 21/7 based on that definition, we can make the following equation where "R" is the reciprocal of 21/7.
(21/7) × R = 1
When we solve for R, we get the answer to the reciprocal of 21/7 as a fraction as follows:
(21/7) × R = 1
R = 7/21
Reciprocal of 21/7 = 7/21
You can check that the answer is correct by confirming that 21/7 times the reciprocal of 21/7 is equal to 1, like this:
21/7 × 7/21 = 1
To find the decimal answer to the reciprocal of 21/7, you divide the numerator of the reciprocal by the demoninator of the reciprocal, like this:
7 ÷ 21 ≈ 0.333333333333
Reciprocal of 21/7 ≈ 0.333333333333
Tip: As you may have inferred from our tutorial above, you can quickly get the reciprocal of any fraction, such as 21/7, 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 21/8
Here is the next fraction on our list that we have calculated the reciprocal of.