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How can knowing the gcf and lcm help you when you add subtract and multiply fractions?
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How can knowing the gcf and lcm help you when you add subtract and multiply fractions?

User Arnon
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Best Answer : Knowing the greatest common multiple and the least common multiple helps because you will know more about what is the answer to a problem like :
78-9 = ?
Is that a multiple for number 5?
User Corey D
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Knowing the gcm and the lcm helps you when you add, subract, and multiply fractions because you will know more about what the answer is to a problem.
User SebastianG
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8.2k points
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