0
I'm not sure why you'd want to. You would get a common numerator of three fractions by finding the LCM of the numerators, but you would still have to find the common denominator to do anything with them. Assuming that's what you meant in the first place, you find a common denominator by finding the LCM of the denominators.
Example: 1/3, 2/5, 5/6. The LCM of 3, 5 and 6 is 30.
1/3 = 10/30
2/5 = 12/30
5/6 = 25/30
Now you can add or subtract them however you'd like.
There is no need to find a common numerator. What you normally need, to add, subtract, or compare fractions, is to find a common denominator. One way to find a common denominator is to multiply all the denominators. Since this may give numbers that are inconveniently large, you may prefer to find the leastcommon denominator. In this case, you can use the prime factorization for each denominator, to eliminate common factors. Just multiply all the prime factors that appear in any of the numbers. Use the highest power for each prime factor.
Add your answer:
Earn +20 pts
How can common factors help determine a fraction?
by dividing or multiplying the numerator and the denominator of a fraction with the same numberex:* 1/2 = (1 x 5)/(2 x 5) = 5/10(multiples both numerator and denominator with 5)1/2 and 5/10 are equivalent fractions* 14/35 = (14:7)/(35:7) = 2/5(divide both numerator and denominator with common factor of 14 and 35)14/35 and 2/5 are equivalent fractions
What is 18 over 56 in simple form?
Fractions can be simplified when the numerator and denominator have a common factor in them. If both the numerator and denominator have common factors, then we can cancel these factors out. So the simplest for of 18/56 is 9/28.
What are fractions called when the numerator is greater than or equal from the denominator?
improper fractions
When multiplying fractions the shortcut process of finding common factors that divide evenly into at least one of the numerator and one of the denominator is called?
It is called simplification [by cancelling common factors].
How can you compare any two fractions to decide which is the largest?
Find the lowest common denominator. Once their denominators are the same, the one with the larger numerator is the largest.
How do you solve simplify fractions?
You search for common factors in the numerator and the denominator. Then you divide numerator and denominator by this common fraction. For example, in the fraction 9/12, the common factor is 3. If you divide numerator and denominator (top and bottom) by 3, you get 3/4, which is an equivalent fraction.
What are the types of fractions?
The two types of fractions are proper fractions, in which the numerator is smaller than the denominator, and improper fractions, in which the numerator is equal to or larger than the denominator.
How do you do unit fractions?
How would we do it well remember a unit fraction always has one as a numerator. So 2/3 would be 1/3 plus 1/3. These are the unit fractions. It's got a 1 is a numerator all right 5/6 would be a 1 6.
What are the kind of fraction and their meaning?
Common fractions whereas the numerator is less then the denominator as in 3/4 Improper fractions whereas the numerator is greater than the denominator as in 5/2 Equivalent fractions have equal values as in 3/4 = 6/8 and 5/2 = 10/4
What fractions are the simplest fractions?
The simplest fractions are those that can't be further simplified. That means: -- The fraction is in "lowest terms". -- Its numerator and denominator have no common factor except ' 1 '. -- Its numerator and denominator are both prime numbers.
What are common fractions?
When the numerator is less than the denominator then it is a common fraction but if the numerator is greater than the denominator then it is an improper fraction.
How do you write equivalent fractions with the lowest common denominator?
Example: 2/3 and 3/4 The LCD of 3 and 4 is 12. Multiply the numerator and the denominator of 2/3 by 4 to make 8/12 Multiply the numerator and the denominator of 3/4 by 3 to make 9/12
What type of fractions can you compare by looking at the numerator?
Only Fractions with a Common Denominator can be directly compared.
How do you multiiply fractions?
A fraction can be written as a numerator (top) over a denominator (bottom).To multiply two fractions youmultiply their numerators to get the numerator of the answer,multiply their denominators to get the denominator of the answer,simplify the answer to remove any common factors in the numerator and denominator.Thus:3/4 * 8/9 = (3*8)/(4*9) = 24/36 = 2/3
How do you put fractions into opposite fractions?
To put fractions into opposite fractions, all you have to do is flip it so that the numerator becomes the denominator and the denominator becomes the numerator. This is called a reciprocal. Example: The opposite of 3/5 is 5/3
What is a vulgar fraction?
A fraction written with an integer numerator placed over a (nonzero) integer denominator is called a vulgar fraction. Vulgar fractions are also known as common fractions or simple fractions. Examples are 2/5 and 7/3. In those examples, the numerators are 2 and 7, the denominators are 5 and 3, all of which are integers. Simple/common/vulgar fractions are distinguished from compound fractions, from complex fractions, from mixed numerals, from decimal fractions, and from irrational fractions. Examples of fractions that are not common fractions are: * 0.75 -- decimal fraction * (3/4) / 2 -- complex fraction * (3/4) / (2/3) -- complex fraction * (1 1/2) / 2 -- complex fraction with mixed numeral in numerator * 3/4 of 5/7 -- compound fraction * 75% --- which equals 75/100, but written as a percent, it has neither a numerator nor a denominator * pi/4 -- irrational fraction. The distinction between common fractions and fractions that are not common is NOT the same as the distinction between proper fractions and improper fractions (which is explained below, but which is not needed to understand what a common fraction is). Common fractions can be either proper or improper. ------ If the absolute value of the numerator (the number on top) is less than the absolute value of the denominator (the number on the bottom) the fraction is called a PROPER fraction.. Examples are 2/3 and and -2/5. If the absolute value of the numerator is greater than the absolute value of the denominator (the number on the bottom) the fraction is called IMPROPER. Examples are 3/2 and and -5/2. Improper fractions can be converted to a mixed numeral, that is, an integer plus a fraction. For example 7/3 is equal to 2 1/3.
What are proper fractions?
Proper fractions are fractions having a numerator that is smaller than the denominator.A proper fraction is when its numerator is less than its denominator as for example 3/4
