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When adding or subtracting fractions with different denominators and when reducing fractions to their lowest terms

When adding or subtracting fractions with different denominators their lowest common multiple is needed and when reducing fractions to their lowest terms their greatest common factor is needed.

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Q: When is it useful to find the LCM or GCF of two or more numbers to solve a problem?

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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.

Yes.

At least two or more numbers are needed to find their LCM

You need to find the common factors in rows and columns. You then need to fill in the two numbers in the blank squares that are shared. Finally, you multiply the common factor numbers to find the number.

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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 simplifying fractions or adding and subtracting unlike fractions.

There is not enough information to solve the problem.

Yes.

Find the sum of two mixed numbers by applying the procedure for adding mixed numbers, Solve a real-world problem by subtracting mixed numbers.

Is a process used by scientists to find answers to questions or solve a problem

find the answer to the problem

You solve the equation.

you have to solve the problem

"Solve",

First you need to find the cause of problem.

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