What is 3/10 minus 10/4?

Here we will show you how to calculate 3/10 minus 10/4. We will give you the answer in fraction form and in decimal form.
We label the numbers in 3/10 minus 10/4 like this:
3/10 - 10/4 = 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 3/10 minus 10/4 into the formula above, we get:
(3x4 - 10x10) / 10x4
(12 - 100) / 40
-88/40
Thus, the answer to 3/10 minus 10/4 (simplified if necessary) in fraction form is as follows:
-2 1/5
To get the answer to 3/10 minus 10/4 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
-88 / 40 = -2.2
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.