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Why should you find a LCM?
Finding an LCM will help when you want to add and subtract fractions.
What is the LCM of 4x and 3x?
Ah, isn't finding the least common multiple a joyous journey? The LCM of 4x and 3x is simply 12x, my friend. Just like painting a happy little tree, finding the LCM brings harmony and balance to your mathematical landscape.
How can you find the second common multiples of two numbers from the first?
To find the second common multiple of two numbers, you first need to identify the least common multiple (LCM) of the two numbers. The LCM is the smallest number that is a multiple of both numbers. Once you have the LCM, you can then find the second common multiple by adding the LCM to the LCM itself. This will give you the second common multiple of the two numbers.
How do you work out the lcm when there are indices?
It is the same as finding the LCM of two numbers that have been expressed as a product of their prime factors except that you need to use the highest index for each prime factor.
How can you determine whether the LCM of two numbers is the product of the numbers or is less than the product if the numbers?
By finding out whether they have any factors in common. If the only factor they have in common is 1, the LCM will be their product. If they have more factors in common, their LCM will be less than their product.
