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Why do fractions need to have a common denomineto before you add or subtract them?
Wiki User
∙ 10y ago
To get the right answer. If you add 1/3 and 1/4, you might not be as successful as when you add 4/12 and 3/12.
Wiki User
∙ 10y ago
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How do u subtract fractions?
multiply the fractions until they have common denominators and then subtract them
When do you need a common denominator?
The denominators must be the same before you can add or subtract fractions.
Do you need a common denominator for all fractions before doing the order of operations?
You DO need a common denominator to add, subtract, or compare fractions. You DO NOT need a common denominator to multiply or divide fractions.
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.
Why do fractions need to have a common denominator before add or subtract them?
because it would be diffcult to understand.[you don't add or subtract the demonters]
How do subtract two fractions with different denominator?
First find the lowest common denominator and then adjust the fractions accordingly before subtracting the numerators
How do you subtract fractions with unequal denominators?
by finding the common denominator of the 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.
Why do fractions need to have common denominator before you add or subtract them simple answer pleas?
So that you only have to add/subtract the numerator which makes it much easier.
Why do fractions need a common denominator before you add or subtract?
Because the answers will be wrong when adding or subtracting them if they don't have a common denominator.
How do you subtract fractions when denominator is different?
By finding the lowest common denominator of the fractions.
