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.

What is the first step in converting a mixed number to an improper fraction?

• Divide the numerator by the denominator

• Add the numerator to the denominator

• Multiply the denominator by the whole number

• Subtract the whole number from the numerator

In the example given, what is the improper fraction form of 3 and 6/7?

• 21/7

• 27/7

• 24/7

• 30/7

When converting a negative mixed number, what should you do with the negative sign initially?

• Multiply it with the denominator

• Ignore it during the conversion process

• Add it to the numerator

• Attach it to the whole number

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

• 15/7

• 19/7

• 21/7

• 17/7

Why is it important to have common denominators when adding or subtracting fractions?

• To simplify the fractions

• To ensure the numerators are equal

• To accurately perform the operation

• To convert them into mixed numbers