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If the denominators are the same, add or subtract the numerators. If the denominators are different, convert them to a common denominator and add or subtract the numerators.
2/3 - 1/3 = 1/3
4/5 - 2/3 = 12/15 - 10/15 = 2/15
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoThe following also applies to comparing fractions. It works for both proper and improper fractions. Mixed fractions require additional considerations. You do the following:1) Find a common denominator
2) Convert all fractions to equivalent fractions, with the common denominator
3) Add, subtract, or compare the numerators
4) In the case of addition and subtraction, check whether you can simplify the resulting fraction
For example, if you want to add 1/6 + 1/2, the common denominator is 6, so you change that to 1/6 + 3/6. Adding the numerators (and keeping the denominator), you get 4/6. This can be simplified to 2/3.
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How do you add and subtract dissimilar fractions?
Make the fractions equivalent then subtract
Do you add and subtract like and unlike fractions in the same way?
no, to add and subtract like and unlike fractions the denominator has to be the same,
How do you add two fractions that have like denominators?
In fractions, you can NEVER add or subtract
Why are two fractions converted into like fractions?
Because you can't add or subtract fractions that have different denominators. Making them like fractions, by multiplying so the denominators are the same, you can add and/or subtract them.
To add and subtract fractions less than 1 you add or subtract only the what?
Numerators
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 add and subtract dissimilar fractions?
Make the fractions equivalent then subtract
Do you add and subtract like and unlike fractions in the same way?
no, to add and subtract like and unlike fractions the denominator has to be the same,
How do you add two fractions that have like denominators?
In fractions, you can NEVER add or subtract
Why are two fractions converted into like fractions?
Because you can't add or subtract fractions that have different denominators. Making them like fractions, by multiplying so the denominators are the same, you can add and/or subtract them.
To add and subtract fractions less than 1 you add or subtract only the what?
Numerators
Is it important to know how to add and subtract fractions why?
it is important to learn how to add and subtract fractions because we can use it when a time comes , when we have our own business and others .
When you add and subtract fractions can the answer be a mixed number?
Yes.
When you add or subtract fractions with unlike denominators why do you have to find LCM?
Because to add fractions, the denominators must be equal.
How do you add and subtract by fractions?
If the fractions have the same denominator, add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible. If the fractions have different denominators, find the LCM of the denominators and convert the fractions to equivalent fractions with like denominators. Then add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible.
How are fractions under addition?
In order to add or subtract fractions, they must have the same denominator.
