Easy way to subtract two fractions with unlike denominators to determine the difference

The video tutorial covers adding and subtracting fractions with unlike denominators. It explains the concept of the least common denominator (LCD) and provides methods to find it, including multiplying denominators. The tutorial also demonstrates how to apply the LCD to perform fraction operations, ensuring equivalent equations by multiplying both numerators and denominators. The final example illustrates the process of combining fractions with a common denominator.

What is the first step in adding or subtracting fractions with unlike denominators?

• Subtract the numerators

• Find the least common denominator

• Multiply the numerators

• Add the denominators

When multiplying two denominators to find the LCD, what should you be cautious about?

• It is the only method to find the LCD

• It always gives the largest common denominator

• It may not always give the least common denominator

• It always results in the smallest number

What is the least common denominator of 9 and 3?

• 3

• 9

• 18

• 27

To adjust a fraction to have a common denominator, what must you do?

• Subtract the same number from both the numerator and denominator

• Multiply only the denominator by a number

• Multiply both the numerator and denominator by the same number

• Add the same number to both the numerator and denominator

After finding a common denominator, how do you perform subtraction on the fractions?

• Multiply the numerators and denominators

• Subtract the denominators and keep the numerators the same

• Subtract the numerators and keep the denominator the same

• Add the numerators and denominators