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you just undissimilarize them.

No just kidding. You need to find LCD, lowest common denominator. If you are too lazy, then just multiply the two denominators together. Basically, you take one denominator from fraction "A", and multiply that value to numerator and denominator of fraction "B". Do the same with Denominator "B" to fraction "A". Once you have the same denominator, you can add or subtract your numerators.

If you are doing a homework assignment and you are in 7th grade or below, you MUST reduce or else you will lose points. But if you're in anything beyond Algebra, nobody remotely cares about reducing fractions. Fraction reduction barely even matters in real life, since real practical science/engineering calculations are done in decimal points. In calculus, there's a TON of fraction work, but again none of that matters in real life because most calculus problems in real life are done numerically with decimals.

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Q: How do you do Addition and subtraction of dissimilar fractions?
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Related questions

What are the rules for dissimilar fraction?

addition subtraction multiplication division


What are the rules for fractions?

addition,subtraction,multiplication,division


What Proper fractions that have the same denominator in addition or subtraction are called?

like fractions


What meaning of subtract dissimilar fraction?

It is an instruction for you to carry out the arithmetic operation of subtraction on fractions whose denominators are not the same.


Why do you have to find a common denominator?

Addition or subtraction of fractions require "like" fractions: that is, fractions with the same denominator.


What is a dissimilar fractions?

Dissimilar fractions are fractions that have different denominators.


How do you use greatest common factor with addition and subtraction of fractions?

You don't. You use the GCF to reduce the answer once the addition or subtraction is complete.


How is subtracting fractions different from adding fractions?

In subtraction you take away rather than add. Also, addition is commutative, subtraction is not so the order of the numbers does matter for subtraction.


Why change mixed numbers to improper fractions?

For addition, subtraction, division and multiplication with other fractions


What is the purpose of finding an LCM?

It assists in the proper addition and subtraction of fractions.


In order to perform this opertation fractions must have the same denominators?

Addition or subtraction


Is dissimilar fractions can be discovered as proper fraction?

Dissimilar fractions may or may not be proper fractions.