What is 7/9 minus 5/4?
Here we will show you how to calculate 7/9 minus 5/4. We will give you the answer in fraction form and in decimal form.
We label the numbers in 7/9 minus 5/4 like this:
7/9 - 5/4 = 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 7/9 minus 5/4 into the formula above, we get:
(7x4 - 9x5) / 9x4
(28 - 45) / 36
-17/36
Thus, the answer to 7/9 minus 5/4 (simplified if necessary) in fraction form is as follows:
-17/36
To get the answer to 7/9 minus 5/4 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-17 / 36 = -0.4722
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.