What is 1/7 minus 2/9?
Here we will show you how to calculate 1/7 minus 2/9. We will give you the answer in fraction form and in decimal form.
We label the numbers in 1/7 minus 2/9 like this:
1/7 - 2/9 = 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 2/9 into the formula above, we get:
(1x9 - 7x2) / 7x9
(9 - 14) / 63
-5/63
Thus, the answer to 1/7 minus 2/9 (simplified if necessary) in fraction form is as follows:
-5/63
To get the answer to 1/7 minus 2/9 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-5 / 63 = -0.0794
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.