0
For the denominator, multiply the denominators together.
For the numerator, subtract the second numerator multiplied by the first denominator from the first numerator multiplied by the second denominator:
a/b - p/q = (a x q - b x p)/b x q
eg:
6/7 - 3/4 = (6 x 4 - 7 x 3)/7 x 4
= (24 - 21)/28
= 3/28
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What do adding and subtracting mixed numbers means?
To combine the fractions or subtract the fractions. Same method with mixed numbers.
Why does the butterfly method work in math?
What the butterfly method does is to make the fractions equivalent fractions with a new denominator (bottom number) the product of the original denominators (bottom numbers). Then to compare/add/subtract the fractions, the numerators (top numerators) can be compared/added/subtracted.Let the two fractions be a/b and c/d, then the new denominator is bd (b times d). Then the equivalent fractions are:a/b ⇒ (a x d)/(b x d) ⇒ ad/bdc/d ⇒ (b x c)/(b x d) ⇒ bc/bd
How do you add and subtract fractions with the same denominator?
it stay the same when you subtract fractions and when you add fractions.
What you need to add or subtract fractions?
You need a common denominator in order to add or subtract fractions.
How do you subtract bigger fractions from smaller fractions?
You don't
Butterfly Method?
Used for adding dissimilar fractions
What do adding and subtracting mixed numbers means?
To combine the fractions or subtract the fractions. Same method with mixed numbers.
Why does the butterfly method work when comparing fractions?
it works when comparing fractions by multiplying the fractions to see whitch one is greater not greater and equal
Why does the butterfly method work in math?
What the butterfly method does is to make the fractions equivalent fractions with a new denominator (bottom number) the product of the original denominators (bottom numbers). Then to compare/add/subtract the fractions, the numerators (top numerators) can be compared/added/subtracted.Let the two fractions be a/b and c/d, then the new denominator is bd (b times d). Then the equivalent fractions are:a/b ⇒ (a x d)/(b x d) ⇒ ad/bdc/d ⇒ (b x c)/(b x d) ⇒ bc/bd
What is the best method for subtracting fractions?
The three-step method is the easiest way to subtract fractions. First, ensure that the bottom numbers, or denominators are the same. Then, subtract the numerators.Place the answer over the same denominator. All one needs to do now is simplify the fraction.
How do you add and subtract fractions with the same denominator?
it stay the same when you subtract fractions and when you add fractions.
How do you add and subtract dissimilar fractions?
Make the fractions equivalent then subtract
How do u subtract fractions?
multiply the fractions until they have common denominators and then subtract them
How do you minnous 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.
What you need to add or subtract fractions?
You need a common denominator in order to add or subtract fractions.
How do you subtract bigger fractions from smaller fractions?
You don't
What you called when you subtract two fractions?
subtracting fractions
