answersLogoWhite

0

First, to subtract fractions, you need to make sure that the both have a common denominator. By this, I mean that they need to have the same number on the bottom of the fraction. If they are not the same, you need to multiply.

Say you had this problem:

4/5 - 1/3

You will notice they don't have a common denominator. To make sure that the bottom is the same number, multiply 4/5 by 3 and 1/3 by 5. When you multiply, you do this to both the top and the bottom number. The problem now looks like this:

12/15 - 5/15

Now you're ready to subtract! All you have to do is subtract the top numbers, and keep the bottom ones the same. So:

4/5 - 1/3 = 7/15

User Avatar

Wiki User

12y ago

Still curious? Ask our experts.

Chat with our AI personalities

ViviVivi
Your ride-or-die bestie who's seen you through every high and low.
Chat with Vivi
ProfessorProfessor
I will give you the most educated answer.
Chat with Professor
BeauBeau
You're doing better than you think!
Chat with Beau

Add your answer:

Earn +20 pts
Q: How do you subtract fractrions?
Write your answer...
Submit
Still have questions?
magnify glass
imp