Easy way to subtract two mixed numbers by converting to improper fractions

The video tutorial explains how to convert mixed numbers into improper fractions. It covers the process of multiplying the denominator by the whole number and adding the numerator to find the new numerator. The tutorial also addresses handling negative mixed numbers and emphasizes the importance of common denominators when subtracting fractions. The example of converting 3 and 6/7 to 27/7 is used, along with a discussion on subtracting 1 and 1/7 from another fraction.

When subtracting fractions, what must you ensure regarding the denominators?

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What is the result of subtracting 8/7 from 27/7?

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