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Q: When you add fractions do you add the denominator to?

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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

if it has a denominator

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.

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

you make fractions equivalent denominators, you add the numerators and put it over the denominator

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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

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

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

Yes.

if it has a denominator

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

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

Yes, you are.

Yes you do.

you make fractions equivalent denominators, you add the numerators and put it over the denominator