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You don't. LCM and GCF (HCF) refer to whole numbers. You can find the LCM of two whole numbers that happen to be denominators, but in that case we call it the LCD. You can find the GCF of two whole numbers that happen to be the numerator and denominator of a fraction, and that will let you know whether the fraction can be simplified.
You can use the GCF of the denominators to find their LCM (LCD). For example,
1/18 + 1/24
GCF = 6 because 18 = 6*3 and 24 = 6*4, thus LCD = 18*4 = 24*3 = 72
1/18 + 1/24 = (1*4)/(18*4) + (1*3)/(24*3) = 4/72 + 3/72 = 7/72.
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How do you find sets of two numbers if HCF and LCM are known?
You cannot. The numbers 2 and 12 have hcf = 2 and LCM = 12 The numbers 4 and 6 also have hcf = 2 and LCM = 12 So if you just knew the hcf and LCM you would not know which of the two was the required pair.
What is the HCF and LCM of 18 and 42?
The LCM is: 126
What is the LCM 10z and 20z?
To find the LCM, you first need to express the numbers as the product of their prime factors. In this case: 10z = 2x5xz 20x = 2x2x5xz The next step is to identify the HCF. In this case that's 2x5xz = 10z. Then you multiply the numbers together and divide by the HCF: 10z x 20z/10z = 20z Thus the LCM of 10z and 20z is 20z.
Adding unlike fractions?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
What does LCM mean in maths terms?
it means lowest common multiple. the opposite to it is hcf or highest common factor ^_^
Examples for LCM and HCF we use in daily life?
LCM is used to find the lowest common denominator in fractions HCF is used to reduce fractions to their simplest terms
What is the use of HCF and LCM?
The HCF helps when reducing fractions. The LCM helps when adding or subtracting fractions.
Why do you find LCM and HCF?
When simplifying fractions it's useful to know what is the HCF of the numerator and denominator is. When adding or subtracting fractions with different denominators it's useful to know what the LCM of them is.
Why you need LCM and HCF in maths?
It's kind of an inverse relationship. The product of the GCF and LCM of two numbers is the same as the product of the original two numbers, so as the GCF increases, the LCM decreases and vice versa. LCM is divisable by HCF.
How is HCF and LCM help us in your daily life?
The HCF helps in simplifying fractions and the LCM helps in finding the lowest common denominator in fractions
The product of two number is 20736 and their HCF is 54 find the LCM?
LCM = Product/HCF = 384
What jobs use the hcf and the LCM?
Chefs, carpenters, anyone who has to add, subtract or simplify fractions.
What job would you have to use LCM and HCF for?
Any job where you need to add or subtract fractions.
If the product oftwo numbers is 810 if there HCF IS 9 FIND LCM?
if the product of two numbers is 810 if there hcf is 9 find Lcm
If LCM and HCF is known of 2 number along with 1 number can you find second number?
Yes: product of a & b = LCM x HCF so b = (LCM x HCF)/a
How can prime numbers be used in your everyday life?
Prime numbers are used to find the LCM of numbers Prime numbers are used to find the HCF of numbers Prime numbers are used to simplify fractions Prime numbers are used to find the LCD of fractions
What is the practical use of HCF and LCM?
For adding and subtracting fractions with different denominators and reducing them to their lowest terms.
