What is 7/10 minus 2/5?
Here we will show you how to calculate 7/10 minus 2/5. We will give you the answer in fraction form and in decimal form.
We label the numbers in 7/10 minus 2/5 like this:
7/10 - 2/5 = 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 7/10 minus 2/5 into the formula above, we get:
(7x5 - 10x2) / 10x5
(35 - 20) / 50
15/50
Thus, the answer to 7/10 minus 2/5 (simplified if necessary) in fraction form is as follows:
3/10
To get the answer to 7/10 minus 2/5 in decimal form, we simply divide the numerator by the denominator from our fraction answer:
15 / 50 = 0.3
Note: The fraction answer is exact, but the answer in decimal format is rounded to the nearest 4 decimals if necessary.