What is 9/9 minus 10/9?

Here we will show you how to calculate 9/9 minus 10/9. We will give you the answer in fraction form and in decimal form.
We label the numbers in 9/9 minus 10/9 like this:
9/9 - 10/9 = 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 9/9 minus 10/9 into the formula above, we get:
(9x9 - 9x10) / 9x9
(81 - 90) / 81
-9/81
Thus, the answer to 9/9 minus 10/9 (simplified if necessary) in fraction form is as follows:
-1/9
To get the answer to 9/9 minus 10/9 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-9 / 81 = -0.1111
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.