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To add fractions, you have to create common (the same) denominators.
You do this by multiplying the fractions times a fraction that is equivalent to 1 (such as 3/3). Multiplying by 1 does not change the value of the fraction. This is the Identity Property of Multiplication. For example 1/2 x 3/3 = 3/6 which is the same fraction in a different form.
Example :
adding 3/8 and 1/3 -- you can see that both fractions could be expressed using the common denominator 24 : 3/8 x 3/3 = 9/24 and 1/3 x 8/8 = 8/24.
3/8 + 1/3 = 9/24 + 8/24 = 17/24
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoMake them the same, for example, 2/4 + 1/5 = 10/20 + 4/20 = 14/20. Remember that whatever you multiply the bottom by you must also multiply the top by when changing fractions.
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How do you add two fractions with a different denominator?
You add two fractions with a different denominator by multiplying the denominators by a number that will make them equal. Be sure to multiply the numerator by that number too.
When you add fractions do you add the denominator to?
No.
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.
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 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.
How do you add two fractions with a different denominator?
You add two fractions with a different denominator by multiplying the denominators by a number that will make them equal. Be sure to multiply the numerator by that number too.
When you add fractions do you have to find a common denominator?
Only if the denominators are different.
Can you add fractions with different denomintors?
Sure. Convert them to a common denominator.
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 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 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.
How do you add and subtract fractions with the same denominator?
it stay the same when you subtract fractions and when you add fractions.
How is adding like fractions and adding unlike fractions the same?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
How to add fractions having similar numerators but different denominators?
The first step, to add, subtract, or compare fractions, is always to convert the fractions to equivalent fractions, that all have the same denominator. You can use one of several techniques to get the LEAST common denominator, or simply multiply the two denominators to get a common denominator (which in this case may, or may not, be the smallest common denominator).
How do you minnous fractions?
Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.
How do you subtract fractions when denominator is different?
By finding the lowest common denominator of the fractions.
