What is 8/5 minus 7/2?
Here we will show you how to calculate 8/5 minus 7/2. We will give you the answer in fraction form and in decimal form.
We label the numbers in 8/5 minus 7/2 like this:
8/5 - 7/2 = 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 8/5 minus 7/2 into the formula above, we get:
(8x2 - 5x7) / 5x2
(16 - 35) / 10
-19/10
Thus, the answer to 8/5 minus 7/2 (simplified if necessary) in fraction form is as follows:
-1 9/10
To get the answer to 8/5 minus 7/2 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-19 / 10 = -1.9
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.