I am new in this website. Please help me with my math homework.
How do you subtract fractions?
How do you subtract 7 and 2/5 AND 4 and 5/10? (7 and 2/5 - 4 and 5/10)
How do you subtract 6/10 and 6/20?
Thank you!
Please visit the following site for a super good tutorial:
http://64.78.42.182/sweethaven/Math/pre-algebra/PreAlg01/default.asp?iNum=0403
Still need help with this 14 years later??
Of course, I'd be happy to help you with your math homework! Let's start by learning how to subtract fractions.
To subtract fractions, you need to have a common denominator. A common denominator is a number that both fractions can be expressed in terms of. Once the fractions have the same denominator, you can subtract the numerators and keep the denominator the same.
Now, let's apply this concept to your specific problems.
Problem 1: Subtract 7 and 2/5 from 4 and 5/10 (7 and 2/5 - 4 and 5/10):
Step 1: Convert the mixed numbers into improper fractions.
7 and 2/5 becomes (7*5 + 2)/5 = 37/5.
4 and 5/10 becomes (4*10 + 5)/10 = 45/10.
Step 2: Find a common denominator.
Since the denominators are already different, the least common multiple (LCM) of 5 and 10 will be the common denominator. In this case, the LCM is 10.
Step 3: Convert the fractions to have a common denominator.
37/5 can be multiplied by 2/2 (which is equivalent to 10/10) to get 74/10.
45/10 remains the same.
Step 4: Subtract the fractions.
74/10 - 45/10 = (74 - 45)/10 = 29/10.
Therefore, 7 and 2/5 - 4 and 5/10 = 29/10.
Problem 2: Subtract 6/10 from 6/20:
Step 1: Find a common denominator.
The least common multiple (LCM) of 10 and 20 is 20.
Step 2: Convert the fractions to have a common denominator.
6/10 can be multiplied by 2/2 (which is equivalent to 20/20) to get 12/20.
6/20 remains the same.
Step 3: Subtract the fractions.
12/20 - 6/20 = (12 - 6)/20 = 6/20.
Therefore, 6/10 - 6/20 = 6/20.
For a more detailed explanation and practice, I recommend visiting the website you mentioned (http://64.78.42.182/sweethaven/Math/pre-algebra/PreAlg01/default.asp?iNum=0403) for a tutorial specifically on subtracting fractions.