What is 9/10 minus 9/7?
Here we will show you how to calculate 9/10 minus 9/7. We will give you the answer in fraction form and in decimal form.
We label the numbers in 9/10 minus 9/7 like this:
9/10 - 9/7 = 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 9/10 minus 9/7 into the formula above, we get:
(9x7 - 10x9) / 10x7
(63 - 90) / 70
-27/70
Thus, the answer to 9/10 minus 9/7 (simplified if necessary) in fraction form is as follows:
-27/70
To get the answer to 9/10 minus 9/7 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-27 / 70 = -0.3857
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.