7th Grade Unit 3 Review: Adding and Subtracting Rational Expressions

This video tutorial is a part of a unit review for 7th graders, focusing on equations and inequalities. It begins with a review of two-step equations, emphasizing the use of reverse PEMDAS to isolate variables. Students are guided through practice problems, including word problems that require writing and solving equations. The tutorial then transitions to inequalities, explaining how to solve and graph them, with a focus on understanding inequality symbols and the impact of multiplying or dividing by negative numbers. Students are encouraged to review previous materials if needed.

What type of equations are focused on in the initial part of the review?

• Two-step equations

• One-step equations

• Simultaneous equations

• Quadratic equations

What folder contains in-depth videos for lessons on two-step equations?

• Module 16

• Module 15

• Module 14

• Module 13

What operation is performed first when using reverse PEMDAS for two-step equations?

• Multiplication

• Addition

• Division

• Subtraction

In solving two-step equations, what is the final operation performed to isolate the variable?

• Subtraction

• Division

• Multiplication

• Addition

How many movies did Jesus buy if he started with $150 and each movie cost $15, leaving him with $75?

• Three movies

• Five movies

• Ten movies

• Eight movies

How many rides did Dante take if each ride cost $2 and he spent a total of $28, including a $12 entry fee?

• Twelve rides

• Ten rides

• Six rides

• Eight rides

What is the correct inequality symbol used when the variable x is isolated and found to be less than -19?

• x < -19

• x = -19

• x >= -19

• x > -19

What should be done on a graph when x is less than a certain number?

• Shade to the right

• Place an open circle

• Place a closed circle

• Shade to the left

What happens to the inequality sign when multiplying or dividing by a negative number?

• It remains the same

• It disappears

• It reverses

• It becomes an equal sign

What is the correct graph representation when y is less than or equal to -6?

• Open circle on -6, shading left

• Solid circle on -6, shading left

• Open circle on -6, shading right

• Solid circle on -6, shading right