Solving Equations and Inequalities for 8th Grade Math

This video tutorial covers the basics of expressions, equations, and inequalities. It begins with simplifying expressions by distributing and combining like terms. The tutorial then moves on to solving equations, emphasizing moving variables and constants to one side using inverse operations. It includes examples of writing and solving equations from word problems, calculating perimeters, and formulating inequalities. The video provides a comprehensive guide to understanding these mathematical concepts with practical examples.

What is the first step in simplifying an expression?

• Combine like terms

• Distribute if necessary

• Isolate the variable

• Move constants to one side

How do you find the perimeter of an equilateral triangle with sides of 'x + 3'?

• 3x + 9

• x + 9

• 3(x + 3)

• x + 3

What is the final step in solving an equation?

• Isolate the variable

• Distribute

• Combine like terms

• Move variables to one side

How do you handle an equation with variables on both sides?

• Move variables to the same side

• Use inverse operations on constants only

• Isolate a variable immediately

• Combine constants first

What does the keyword 'each' indicate in an equation?

• Addition

• Multiplication

• Division

• Subtraction

How much does one cookie cost at Tasty Sweets?

• $1.50

• $2.50

• $9.00

• $3.00

What is the value of 'x' when the perimeter of the triangle is given as '21x'?

• 2

• 4

• 5

• 3

When will Kevin have more money saved than Alex?

• When Kevin's savings exceed $200

• When Kevin saves $30 each week

• When Alex saves $20 each week

• When Alex stops saving money

Which plan is cheaper when downloading more than 10 movies?

• Plan C

• Plan D

• Both are the same

• Cannot be determined

What does the inequality sign '<' represent?

• Not equal to

• Less than

• Greater than

• Equal to