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Addition or subtraction

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Q: In order to perform this opertation fractions must have the same denominators?
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Related questions

How do you order fractions if there is improper fractions?

you have to find like denominators and then you order them from least to greatest by there numerators


How do you arrange fractions in asending order?

Various methods: * Convert the fractions into equivalent fractions with the same denominator; then order by smallest numerator to largest; * Convert the fractions to [approximate] decimals by dividing the numerators by the denominators; then order by the smallest decimal to largest; * Divide the denominators by the numerators; then order by the largest result to the smallest. In all cases list the original fractions.


When adding fractions do denominators change?

you must make the denominators the same first in order to add them once they are added, the denominators stay the same and the top combines


Why are least common denominators important?

In order to subtract or add fractions the denominators must be the same and that's why the LCD must be found.


How do you put fractions from least to greatest?

Convert them to common denominators and put the numerators in ascending order.


Meaning of adding of dissimilar fractions?

Dissimilar fractions have different denominators and their lowest common denominator must be found in order to add them up.


How do you order fractions with unlike denominators?

You can convert them to equivalent fractions with like denominators, then simply compare the numerators.You might also convert each fraction to a decimal (divide the numerator by the denominator); then you can also compare them.


How do you order like fraction?

Like fractions can be ordered according to their numerators alone. You can ignore the denominators for the process.


When do you add fractions when baking?

In order to add fractions, they must have the same denominators. If the fractions you wish to add do not already have the same denominators, they can be made to do so by finding the right number by which to multiply both the numerator and the denominator of each fraction. To find this number, multiply all the distinct denominators together, then multiply both the numerator and denominator of each fraction by a number found by the dividing the product of the distinct denominators by the denominator of the particular fraction concerned. All the fractions will then have the same denominator. Add the numerators of such fractions together to find the numerator of the sum; its denominator will be the one common to all the fractions.


What must you find in order to add or subtract unlike fractions?

A common denominator. The best way is to find the LCM (Lowest Common Multiple) of all the denominators - the smallest number into which all the denominators will divide. (The easiest way to do this is to multiply all the different denominators together. Once this common denominator has been found, convert all the fractions into equivalent fractions with this new denominator.


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 do you use LCD in math?

When adding or subtracting fractions with different denominators then their LCD must be found in order to carry out the calculations.