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You must find a common denominator. You figure out the smallest number that all of your denominators are divisible by. If you have to multiply the denominators by 2, you must multiply the numerators by 2, then add the numerators together, and write above the common denominator. If you have to multiply one denominator to equal the other denominator, then you must multiply the numerator above that denominator, and finally add up the numerators and place above the common denominator. Then reduce the answer to its smallest fraction.

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Q: What happens to the denominator when you add fractions?
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Related questions

When you add fractions do you add the denominator to?

No.


When you add fractions do they have to have the same denominator?

Yes you have to add with the same denominator. when ever you do fractions they have to have the same denominator no matter what. So thats a yes


How do you add and subtract fractions with the same denominator?

it stay the same when you subtract fractions and when you add fractions.


When you add or subtract fractions with the same denominators what happens to the denominator in your answer?

It stays the same. Only the numerators change.


How do you add or subtract dissimilar fractions?

You first convert them to similar fractions, i.e., to fractions that have the same denominator.* Step one: find a common denominator.* Step two: convert both fractions to equivalent fractions that have that denominator.


How do you add fractions with unlike denometiors?

You look for a common denominator; convert the fractions to equivalent fractions with the denominator you found; then you do the addition itself.


What you need to add or subtract fractions?

You need a common denominator in order to add or subtract fractions.


When you add fractions do you have to have the same denominator?

Yes.


How do you add fractions with same numerator?

if it has a denominator


Why do you need a common denominator with fractions?

You can add or subtract fractions only if they are "like" fractions, that is, only if they have the same denominator - unless you know your fractions really well.


How do I add improper fractions?

Change them into mixed numbers and add the integers and fractions together ensuring that the fractions have a common denominator.


When you add fractions are you supposed to have the same denominator?

Yes, you are.