Reviewing student answers to show how to add two rational expressions by finding the LCM

The video tutorial explains how to find the least common multiple (LCM) of numbers. It begins with an introduction to the concept of LCM, followed by a step-by-step guide on determining the LCM. The tutorial concludes with the final calculation and a summary of the process, emphasizing the importance of common denominators and adding numerators.

What does LCM stand for in the context of this lesson?

• Largest Common Multiplier

• Lowest Common Measure

• Lowest Common Multiplier

• Least Common Multiple

What is the purpose of multiplying terms in the process described?

• To eliminate fractions

• To increase the value of the equation

• To achieve common denominators

• To simplify the equation

Which number is used to multiply in order to reach the common denominator of 20X?

• 3

• 4

• 5

• 6

What is the result after adding the numerators in the final step?

• 17 over 20X

• 15 over 20X

• 16 over 20X

• 18 over 20X

What is emphasized about the solution at the end of the lesson?

• It is incorrect

• It needs revision

• It is partially correct

• It is very good and correct