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

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Q: Rules of adding and subtracting similar 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 of adding and subtracting dissimilar fractions?

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.


What are the rules in subtracting similar fraction?

If the denominators are the same (which is what I understand by "similar fractions"), just subtract the numerators (the upper part).


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


Who made the rules for adding and subtracting integers?

David Missoula's


What are the rules of subtracting polynomials?

You subtract a polynomial by adding its additive inverse. For example, subtracting (x - y) is the same as adding (-x + y). Alternately, you can simply subtract similar terms - that is, subtract the coefficients (the numbers) for terms that have the same combination of variables.


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.