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Do you ever have to simplify if you find the LCD when subtracting fractions?
Blackstar01
No because in order to subtract or add fractions the denominator of the fractions must be the same and if they are not then the lowest common denominator of the fractions must be found. Having subtracted or added the fractions then it may be possible to simplify the result.
Wiki User
∙ 10y ago
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When is it useful to find the LCM or GCF of two numbers to solve a problem?
When adding or subtracting fractions with different denominators and when reducing fractions to their lowest termsWhen adding or subtracting fractions with different denominators their lowest common multiple is needed and when reducing fractions to their lowest terms their greatest common factor is needed.
How you use the least common multiple?
When adding or subtracting unlike fractions, the LCM process is used to find the least common denominator.
What is the relationship between least common multiple and greatest common faction?
Least common multiple is needed to find the least common denominator when adding or subtracting fractions with different denominators Greatest common factor is needed when reducing fractions to their lowest terms
What is the trick to finding the greatest common factors?
Finding the GCF will help you when you are trying to reduce fractions.
How does finding the GCF help you simplify a fraction?
When adding and subtracting unlike fractions, it is necessary to find a least common denominator. It's the same process as finding an LCM. You can simplify a fraction by finding the GCF of the numerator and denominator and dividing them both by it.
When adding or subtracting fractions you need to?
Find a common denamonator.
What is the importance of reducing fractions to lowest term?
In order to find the LCD when adding or subtracting fractions
When trying to find like fractions do you first simplify all fractions and then find the like denominators?
yes
What is a subtracting mixed number?
Subtracting a mixed number is just subtracting fractions but with a whole number by a fraction. To subtract tun the mixed numbers into improper fractions and find the common denominator. Then you subtract the numerators.
How do you find a multiple when subtracting fractions?
Same as adding, multiplying, and dividing.
When will you need to find the multiples and factors?
When adding or subtracting fractions with different denominators and when reducing fractions to their lowest terms
Why are equivalent fractions important when adding and subtracting fractions?
Because to add or subtract two fractions you first have to find equivalent fractions for both which have the same denominator.
What are some real life applications of gcf and LCM?
Those are commonly used for working with fractions. You need the least common multiple to find a common denominator, for adding or subtracting fractions. And after doing some manipulations with fractions, you need the greatest common factor to simplify the fractions.Now, whether this is sufficiently "real-life" for you, is another issue. Depending on the career you choose, you many need to work with fractions on a daily basis, or you may hardly ever need them.
What kind of problems you need to find the GCF?
When you are trying to simplify fractions.
Adding and subtracting unlike fractions steps?
first u find a common denominator
How do you simplify fractions using the factor tree?
To simplify fractions, it is necessary to divide the numerator and the denominator by their GCF. You can find their GCF by comparing their prime factorizations. You can find their prime factorizations through the use of factor trees.
How do subtract two fractions with different denominator?
First find the lowest common denominator and then adjust the fractions accordingly before subtracting the numerators
