You use the LCM when you want to add or subtract fraction and then you can use the HCF to simplify the result.
You may want to do this when budgeting: for example one quarter of your pay goes on rent, two fifths goes on food and drink, and so on. So how much of your pay is available for discretionary spending?
Chat with our AI personalities
In finding the LCM or HCF of two or more numbers
weighing scales
The HCF helps in simplifying fractions and the LCM helps in finding the lowest common denominator in fractions
The HCF is: 2The LCM is: 2,520
hcf = 42, lcm = 84.