Finding the LCM will make adding and subtracting fractions easier.
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The GCF can be used to reduce fractions.
The LCM can be used to add and subtract unlike fractions.
Use the GCF to reduce equivalent fractions. Use the LCM to add and subtract unlike fractions.
Finding the GCF will help in simplifying fractions. Finding the LCM will help in adding and subtracting fractions.
For reducing fractions to their lowest terms
The GCF is 6. That makes the LCM 42.
The GCF is 4.
The LCM is 11592. The GCF is 2.