What is 1/2 minus 9/7?
Here we will show you how to calculate 1/2 minus 9/7. We will give you the answer in fraction form and in decimal form.
We label the numbers in 1/2 minus 9/7 like this:
1/2 - 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 1/2 minus 9/7 into the formula above, we get:
(1x7 - 2x9) / 2x7
(7 - 18) / 14
-11/14
Thus, the answer to 1/2 minus 9/7 (simplified if necessary) in fraction form is as follows:
-11/14
To get the answer to 1/2 minus 9/7 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-11 / 14 = -0.7857
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.