Adding and Subtracting Expressions with Like Denominators

The video tutorial from MooMoo Math explains how to add and subtract expressions with like denominators, focusing on fractions that include variables. It covers the process of bringing over the common denominator and performing operations on the numerators. The tutorial includes examples of both addition and subtraction, demonstrating how to simplify the results. It also addresses cases with multiple terms in the numerators, ensuring a comprehensive understanding of the topic.

What is the first step when adding expressions with like denominators?

• Find a common denominator

• Add the numerators

• Multiply the denominators

• Subtract the numerators

Tags

CCSS.7.EE.A.1

In the expression a/4 + 3a/4, what is the simplified form?

• 5a/4

• 2a

• a/2

• 4a/4

Tags

CCSS.7.EE.A.1

When subtracting 11/4r - (-1/4r), what operation is performed on the numerators?

• Addition

• Multiplication

• Division

• Subtraction

What is the result of simplifying 12/4r?

• r/3

• 3/r

• 3r

• 4r

Tags

CCSS.7.EE.A.1

In the expression 5y/6 - y/6, what is the simplified form?

• 4y/6

• 2y/3

• 5y/6

• y/6

Tags

CCSS.HSA.APR.D.7

What is the common denominator in the expression 5y/6 - y/6?

• 6

• 1

• y

• 5

Tags

CCSS.HSA.APR.D.7

When adding expressions with multiple terms in the numerator, what should you do first?

• Multiply the terms

• Add the like terms

• Divide the terms

• Subtract the terms

Tags

CCSS.7.EE.A.1

In the expression 1t + 1t + 2 + 5, what is the sum of the like terms?

• 1t + 2

• 2t + 5

• 3t + 5

• 2t + 7

Tags

CCSS.7.EE.A.1

What is the final result of the expression 2T + 7 all over 3?

• 2T + 7/3

• 2T/3 + 7/3

• 2T + 7/3

• 2T/3 + 7

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the importance of having a common denominator when adding or subtracting expressions?

• It allows for multiplication of numerators

• It helps in dividing the numerators

• It is not necessary

• It simplifies the process of adding or subtracting numerators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2