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How do you add and subtract fractions with the same denominator?
Wiki User
∙ 10y ago
Wiki User
∙ 10y ago
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What you need to add or subtract fractions?
You need a common denominator in order to add or subtract fractions.
When do you need a common denominator?
The denominators must be the same before you can add or subtract 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.
Why do you need a common denominator?
Common Denominator means that the denominators in two (or more) fractions are common, or the same. The common denominator is important because before you can add or subtract fractions, the fractions need to have a common denominator.Sometimes fractions have different denominators, like 2/3 and 3/4. If you want to add or subtract them, they need to have the same denominator. In order to do that, you find a common denominator which is the same thing as a common multiple, only with denominators.
When 2 or more fractions have same denominator?
If you are adding or subtracting fractions with the same denominator, you can add or subtract the numerators and keep the denominator the same. 1/8 + 3/8+ 3/8 = 7/8, for example
Do you add and subtract like and unlike fractions in the same way?
no, to add and subtract like and unlike fractions the denominator has to be the same,
How are fractions under addition?
In order to add or subtract fractions, they must have the same denominator.
How do you add or subtract fractions when negative?
The same as with positive ones. Make sure they have the same denominator and add or subtract their numerators.
How do you add and subtract improper fractions with different denominator?
he fact that they are improper is irrelevant. Re-scale the fractions so that they have the same denominator and thenadd or subtract as required.
What you need to add or subtract fractions?
You need a common denominator in order to add or subtract fractions.
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 you add and subtract by fractions?
If the fractions have the same denominator, add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible. If the fractions have different denominators, find the LCM of the denominators and convert the fractions to equivalent fractions with like denominators. Then add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible.
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.
When do you need a common denominator?
The denominators must be the same before you can add or subtract fractions.
Fractions can be added and subtracted only if they're fractions?
We can only add or subtract fractions if they have the same denominators
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.
Why do you need a common denominator?
Common Denominator means that the denominators in two (or more) fractions are common, or the same. The common denominator is important because before you can add or subtract fractions, the fractions need to have a common denominator.Sometimes fractions have different denominators, like 2/3 and 3/4. If you want to add or subtract them, they need to have the same denominator. In order to do that, you find a common denominator which is the same thing as a common multiple, only with denominators.
