0
What is the rule for adding fractions with unlike denominators?
Wiki User
∙ 10y ago
You convert them, using equivalent fractions, so that they have the same denominator - a common multiple of the deniminators.
Then the denominator of the sum is the common multiple while the numerator is the sum of numerators of the converted fractions. Finally, you need to check if the answer can be simplified.
Students are often instructed that they must use the least common multiple (LCM). This is not necessary: any common multiple will do, though the LCM will require smaller numbers and so may be easier.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Do the adding fractions rule apply to subracting?
Yes inasmuch that the denominators of the fractions must be common to each other.
What is the rule in adding fractions having the same denominator?
Sum of the fractions = sum of numerators divided by their common denominator. Adding Fractions rule implies to addition of fractions having same denominator and as well as adding fractions with different denominators. So rule for adding fractions having the same denominator is add the numerators and simplify For example : 3/5 + 2/5 + 9/5 = (3 + 2 + 9)/5 [add the numerators] = 14/5
What is the rule for multiplying fractions with like denamonators?
Multiply all numerators to get numerator of the product. Multiply all denominators to get denominator of the product. This is true whether the factors have like or unlike denominators.
What is the rule of adding and subtracting different denominator?
Find the lowest common denominator by finding the lowest common multiple of the denominators
How do you add fractions with the same dinominator?
To add fractions the denominators must be the same.When the denominators are the same, just add the numerators keeping the denominator for the result, and then simplify the result, eg 1/8 + 3/8 = 1+3/8 = 4/8 = 1/2;If the denominators are different, make the fractions into equivalent fractions with the same denominator, and then use rule 1, eg 1/3 + 1/2 = 2/6 + 3/6 = 2+3/6 = 5/64/7 + 2/7=NEVER ADD THE DENOMINATORS!So you add 4 + 2= 6Then put 6/7 Because you keep the same Denominator.Easy now you can add fractions with the same denominators! :)Hope this helps!
Do the adding fractions rule apply to subracting?
Yes inasmuch that the denominators of the fractions must be common to each other.
What is the rule in adding fractions having the same denominator?
Sum of the fractions = sum of numerators divided by their common denominator. Adding Fractions rule implies to addition of fractions having same denominator and as well as adding fractions with different denominators. So rule for adding fractions having the same denominator is add the numerators and simplify For example : 3/5 + 2/5 + 9/5 = (3 + 2 + 9)/5 [add the numerators] = 14/5
What is the rule for multiplying fractions with like denamonators?
Multiply all numerators to get numerator of the product. Multiply all denominators to get denominator of the product. This is true whether the factors have like or unlike denominators.
What is the rule for adding fractions?
They have to have a common denominator
What is the rule of adding and subtracting different denominator?
Find the lowest common denominator by finding the lowest common multiple of the denominators
What is the general rule for multiplying fractions?
The product of two fractions is equal to the two numerators multiplied together divided by the two denominators multiplied together. (a/x) * (b/y) = (a * b) / (x * y)
How do you add fractions with the same dinominator?
To add fractions the denominators must be the same.When the denominators are the same, just add the numerators keeping the denominator for the result, and then simplify the result, eg 1/8 + 3/8 = 1+3/8 = 4/8 = 1/2;If the denominators are different, make the fractions into equivalent fractions with the same denominator, and then use rule 1, eg 1/3 + 1/2 = 2/6 + 3/6 = 2+3/6 = 5/64/7 + 2/7=NEVER ADD THE DENOMINATORS!So you add 4 + 2= 6Then put 6/7 Because you keep the same Denominator.Easy now you can add fractions with the same denominators! :)Hope this helps!
How do you get a common denominator for subtracting fractions?
you gotta find tyhe width of they nile river and substiture into the cosine rule before dividing by the velocity of the amazon rainforest
What is the rule for multiplying fractions provide an example?
Multiply the numerators together. Multiply the denominators together. Simplify if possible. 3/4 x 6/7 = 18/28 = 9/14
What is a rule for multiplying fractions?
To multiply fractions you multiply both numerators (the top numbers) and both denominators (the bottom numbers) to get your answer. For example: 1/4 x 2/3 = (1 x 2) / (4 x 3) = 2/12 (or 1/6)
What is the rule of adding integers with unlike signs?
The magnitude of the answer is the difference between the two numbers and it has the sign of the integer which has the bigger magnitude. I guess so?
What happens if the denominator is the same when multiplying fractions for example 3 over 8 times 1 over 8?
Do you know how to multiply fractions if the denominators are different ?Multiply the numerators to get the numerator and multiply denominatorsto get the denominator ? Is that right ?Well, that rule doesn't actually say anything about whether the denominatorsare the same or different, does it.That's because it doesn't matter. The rule is good either way.
