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Why do fractions need to have unlike denominator before you add or subtract them?
Wiki User
∙ 9y ago
The question is based on a complete misunderstanding of what is required. Unlike denominators are NOT required!
Wiki User
∙ 6y ago
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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,
What are the steps to subtract unlike fractions?
first find a common denominator then subtract the top numbers
Why do you need to use common denominator?
To get the right answer when you add or subtract unlike fractions.
How do you subtract fractions with unlike?
Before you can add or subtract, both fractions must have the same denominator, andmaking that change without changing the value of either fraction is your job. The bestchoice for a 'common' denominator is usually the least common multiple of the originaldenominators.
What are like and unlike fractions?
Like fractions are the fractions which have the same denominator and unlike fractions are the fractions which do not have the same denominator.
How do you subtract Fractions with models unlike denominators?
The denominators need to be the same for subtraction. Find the Least Common Denominator for both items and then subtract.
How can the greatest common factor and least common multiple help you work with fractions?
Finding the GCF of the numerator and the denominator of a fraction and dividing them both by it will give you the simplest form of that fraction. Finding the LCM of unlike denominators and converting them to it will make it possible to add and subtract unlike fractions.
How do you add or subtract fractions with unlike denominators?
convert at least one of them so that they have the same denominator, then proceed with the addition or subtraction
How are like fractions and unlike fractions different?
Like fractions have the same denominator, unlike fractions don't.
What do you call fractions with not the same denominator?
"Unlike" fractions.
What must a mathematician do before adding two unlike fractions?
Find the lowest common denominator
How do you add and subtract fractions with unlike denominators without finding a common denominator?
The fastest and surest way to do that is to have a calculator that has a fraction button. (a b/c)
