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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.

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Q: How do you find the LCM in fractions?

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It is useful to find the LCM when you want to add and subtract fractions. It is useful to find the GCF when you want to reduce fractions.

The LCM refers to whole numbers, not fractions.

The LCM is used for integers, not fractions. If you're trying to add unlike fractions, take the LCM of the denominators (known in this case as the least common denominator, or LCD), convert the fractions and proceed.

You will need to find the LCM in order to add and subtract fractions.

When adding fractions, you want to make sure that the denominators are the same. It's the same process as the LCM.

Finding the LCM will help you when you need to add and subtract fractions.

Finding an LCM will help when you want to add and subtract fractions.

To add and subtract fractions, you need common denominators. To find the common denominator, find the LCM of the denominators you wish to add or subtract.

When adding and subtracting unlike fractions, it is necessary to find the LCM of the denominators, called the least common denominator. Once you have found the LCD, you can convert the fractions to equivalent fractions with a common denominator and proceed with the adding and/or subtracting. Finding an LCM will have no effect on multiplying fractions.

Finding the LCM helps in the process of adding and subtracting unlike fractions.

We use the LCM to find the least common denominator of unlike fractions.

When you are adding and subtracting fractions.

To add and subtract fractions, you need common denominators. To find the common denominator, take the LCM of the denominators you wish to add or subtract.

Because to add fractions, the denominators must be equal.

When adding or subtracting unlike fractions, the LCM process is used to find the least common denominator.

You need at least two numbers to find an LCM. And they need to be whole numbers, not fractions.

LCM is used to find the lowest common denominator in fractions HCF is used to reduce fractions to their simplest terms

The LCM refers to integers, not fractions.

The LCD of two fractions is the same as the LCM of their denominators.

When adding unlike fractions, find the LCM of the denominators and convert them to it.

When you want to add or subtract fractions and need to find a common denominator.

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.

The GCF is useful when you are trying to reduce fractions. The LCM is useful when you are trying to add and subtract unlike fractions.

The GCF is useful when you are trying to reduce fractions. The LCM is useful when you are trying to add and subtract unlike fractions.

When you are adding or subtracting fractions with unlike denominators, you need to find a least common denominator, or LCD. The process is the same as finding an LCM between two integers.