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.
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.
The LCM is: 126
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.
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.
it means lowest common multiple. the opposite to it is hcf or highest common factor ^_^
LCM is used to find the lowest common denominator in fractions HCF is used to reduce fractions to their simplest terms
The HCF helps when reducing fractions. The LCM helps when adding or subtracting fractions.
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.
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.
The HCF helps in simplifying fractions and the LCM helps in finding the lowest common denominator in fractions
LCM = Product/HCF = 384
Chefs, carpenters, anyone who has to add, subtract or simplify fractions.
Any job where you need to add or subtract fractions.
if the product of two numbers is 810 if there hcf is 9 find Lcm
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
Yes: product of a & b = LCM x HCF so b = (LCM x HCF)/a
For adding and subtracting fractions with different denominators and reducing them to their lowest terms.