What is 1/7 minus 1/3?
Here we will show you how to calculate 1/7 minus 1/3. We will give you the answer in fraction form and in decimal form.
We label the numbers in 1/7 minus 1/3 like this:
1/7 - 1/3 = A/B - C/D
We will use a formula that does not require you to find the lowest common denominator to find the solution. The formula is:
(AD - BC) / BD
When we fill in 1/7 minus 1/3 into the formula above, we get:
(1x3 - 7x1) / 7x3
(3 - 7) / 21
-4/21
Thus, the answer to 1/7 minus 1/3 (simplified if necessary) in fraction form is as follows:
-4/21
To get the answer to 1/7 minus 1/3 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-4 / 21 = -0.1905
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.