Best Answer

example:

3/4+3/8=?

First find a common multiple: 8

then make sure the denominator for each is 8.

To do that for the first fraction you have to multiply the denominator by 2...and whatever you do to the denominator you have to do to the numerator. so you multiply the 3 also.

3/4=6/8

since the denominator for the second fraction is already 8, you dont do anything to it/it stays the same!

add across and the new equation is: 6/8+3/8=9/8

Hope it helped!

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Q: How do you do fractions with different denominators?

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Dissimilar fractions have different denominators.

Dissimilar fractions are fractions that have different denominators.

unlike fractions

Fractions that are not equivalent are dissimilar fractions * * * * * The term is used more commonly to refer to fractions whose denominators are different.

Dissimilar fractions.

unlike fractions

Fractions are alike if they have the same denominators; otherwise they are different.

You use them when there are 2 fractions with different denominators.

You cannot add or subtract fractions with different denominators. If the denominators are different then you need to work with equivalent 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.

It depends what you are doing with the fractions. If you are multiplying or dividing fraction, the denominators do not need to be the same and the calculation can be carried out immediately. If you are adding or subtracting fractions, the denominators must be the same; if you have different denominators, the fractions must first be changed into equivalent fractions with the same denominator. When the denominators are the same (or have been made the same as equivalent fractions from being different) the calculation can be carried out.

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.

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