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Q: How do you add or subtract dissimilar fractions?

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We can only add or subtract fractions if they have the same denominators

Simplify them.

1) Convert the fractions to equivalent fractions, to ensure they have the same denominator. 2) Once they have the same denominator, just add or subtract the numerators. 3) As with most problems with fractions, check whether you can simplify the final result.

Subtract the numerators as we normally subtract them and then divide the resultant by the denominator. It's just simple like that.

Yes the bottom has to be the same when subtracting fractions. The bottom (or denominator) tells you what you're working with. You cannot subtract thirds from halves just as you cannot subtract oranges from tissues.

Related questions

Make the fractions equivalent then subtract

What is the answer for 8 1/3 - 5 2/6

it stay the same when you subtract fractions and when you add fractions.

You need a common denominator in order to add or subtract fractions.

Dissimilar fractions have different denominators and their lowest common denominator must be found in order to add them up.

In fractions, you can NEVER add or subtract

Dissimilar fractions are fractions that have different denominators.

no, to add and subtract like and unlike fractions the denominator has to be the same,

You have to convert them to equivalent similar fractions (fractions with the same denominator) first.

Numerators

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.

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.

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