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There is always going to be a LCM. Just multiply the two numbers together to get the a common multiple if you cant find one because the two numbers multiplied together is a common multiple.

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13y ago
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11y ago

Yes, you have to find the Least Common Multiple.

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Q: What if there is no LCM in a fraction problem?
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When is it useful to find the LCM or Greatest common factor in a problem?

Find the GCF when you want to simplify a fraction. Find an LCM when you want to add and subtract fractions.


How can you solve a multistep problem that involves fraction?

The first step is to find the least common multiple (LCM) of all the denominators. Next, multiply each term by this LCM. When you have done this you will have a multistep problem which is free of fractions.


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There can be no LCM for a single fraction.


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The LCM of 4 and 80 is 80.


What fraction is the LCM of 7 and 13?

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The problem is you only have one number and you need at least two to find an LCM. If that's 4 and 8, the LCM is 8.


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Since 20z97 is a multiple of 4z64, it is automatically the LCM of this problem.


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Since 20z is a multiple of 10z, it is automatically the LCM of this problem.


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Since 100p3 is a multiple of 20p, it is automatically the LCM of this problem.


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The LCM refers to whole numbers, not decimals.


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Since 98y9 is a multiple of 14y5, it is automatically the LCM of this problem.


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Since 616 is a multiple of 8, it is automatically the LCM of this problem.