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If their denominators are different then find their lowest common denominator by means of their lowest common multiple remembering to adjust their numerators accordingly before adding or subtracting.

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Q: What are the Rules of adding and subtracting dissimilar fractions?
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Related questions

What are the rules for adding fractions?

Ensure that the denominators are the same when adding or subtracting fractions.


What are the rules for adding subtracting multiplying and dividing fractions?

no answer


What are the rules for subtracting fractions?

You multiply the fractions until the denominators are equal. Then, you subtract.


What is the rules for algeraba for subtracting negatives?

Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.


What are the rules in adding and subtracting polynomial?

your mom is 2


Rules of adding and subtracting similar fractions?

If the denominators are the same, just add or subtract the numerators. For example, 2/7 + 3/7 = 5/7. am i right?


What are the rules of the dissimilar fractions?

I assume you mean, with different denominators. If you want to add the fractions, subtract them, or compare them (determine which one is greater), you have to convert them to similar fractions (fractions with the same denominator) first. Converting to similar fractions is not necessary, and usually doesn't even help, if you want to multiply or divide fractions.


Who made the rules for adding and subtracting integers?

David Missoula's


How are adding subtracting decimals different from multiplying them?

They aren't. The rules are the same as those for adding/subtracting or multiplying integers. Just be careful of the decimal point's location.


Why do you change mixed numbers to improper fractions before multiplying and dividing?

Because common denominators allow adding and subtracting of numerators. Improper fractions also have simplified rules over mixed numbers when performing multiplication and division.


What are the three rules of adding and subtracting decimals for 5 grade?

line up the decimal point when your adding and subtracting. add annex a zero when you have extra number. sometimes you can use a number line.


What are the rules for adding and subtracting positive and negative fractions with different denominators?

first must find Least Common Denominator http://www.loisterms.com/lois21.htm First of all, if you want to know about adding fractions, check out "How to Add Fractions". Be sure to follow the math examples carefully. To subtract fractions, follow the same steps as for adding, except subtract where you would add. Now about those positive and negative signs. The rules are the same whether you are working with integers or fractions. I will give you a method of learning the rules for the signs that has worked for many other students. Copy off this "Rules for Integers" chart and paste it on a large index card. Put the card in your math book or folder and refer to it often while you are doing your homework. If you keep using the card, you will get better with the signs.