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Ch 8: High School Algebra: Algebraic Expressions and Equations

About This Chapter

Analyze these lessons to determine how to solve algebraic expressions and equations. Expand your knowledge of related formulas and algebraic terminology, or simply use this chapter to better understand a homework assignment or to prepare for a test.

High School Algebra: Algebraic Expressions and Equations - Chapter Summary

There are a full range of algebraic expressions and equations to learn, but to do so you must first know the basics of how to read these problems and what steps to take to find the answers. This chapter has been designed to review this foundational knowledge, which you will need to know before you can move on to more advanced mathematical topics.

You may already know some of the basics, and you can assess how much you recall by answering questions found on the lesson quizzes. For topics you don't remember as well, you can use the chapter menu to go directly to those lessons. Each lesson focuses on a single topic, so you can easily find the information you need to review. A flashcard set lets you test your knowledge of algebra terms. When you have finished this chapter, you should be ready to do the following:

  • Review the proper way to write and set up arithmetic expressions
  • Show how to comprehend and analyze math problems
  • Determine relationships with algebraic expressions
  • Establish simple algebraic expressions
  • Outline how to combine like terms to simplify equations
  • Evaluate steps for simplifying with negative signs
  • Analyze equations with true/false statements and open sentences
  • Inspect polynomial, quadratic, linear, and other equation types
  • Map out one-step equations
  • Apply the multiplication and addition principles to solve problems
  • Describe how to put similar terms on one side of the equation
  • Identify steps for solving equations with no solutions, infinite solutions, or parentheses
  • Analyze how to turn words into algebraic expressions
  • Check out techniques for solving one-step and multi-step equations

21 Lessons in Chapter 8: High School Algebra: Algebraic Expressions and Equations
What is the Correct Setup to Solve Math Problems?: Writing Arithmetic Expressions

1. What is the Correct Setup to Solve Math Problems?: Writing Arithmetic Expressions

When it comes to solving math word problems, there is a correct way of setting up the problem and labeling the various parts of the problem so that you can solve the problem easily. Watch this video lesson to learn how you can do it.

Understanding and Evaluating Math Formulas

2. Understanding and Evaluating Math Formulas

With all the formulas out there, how do you know which one to pick? And how do you read formulas anyways? Watch this video lesson and you will find the answers to these questions.

Expressing Relationships as Algebraic Expressions

3. Expressing Relationships as Algebraic Expressions

What do you do when you don't know what a number is but you do know how it relates to something else? You use an algebraic expression. In this lesson, we'll learn how to express relationships as algebraic expressions.

Evaluating Simple Algebraic Expressions

4. Evaluating Simple Algebraic Expressions

In this lesson, we'll learn how to evaluate algebraic expressions, which involves substituting numbers for variables and following the order of operations. By the end of the lesson, you'll be an algebraic expression expert.

Combining Like Terms in Algebraic Expressions

5. Combining Like Terms in Algebraic Expressions

When you have an algebraic expression that's much too long, it would be great if you could simplify it. That's when knowing how to combine like terms comes in. In this lesson, we'll learn the process of combining like terms and practice simplifying expressions.

Practice Simplifying Algebraic Expressions

6. Practice Simplifying Algebraic Expressions

In this lesson, we'll practice simplifying a variety of algebraic expressions. We'll use two key concepts, combining like terms and the distributive property, to help us simplify.

Negative Signs and Simplifying Algebraic Expressions

7. Negative Signs and Simplifying Algebraic Expressions

Don't let negative signs get you down. In this lesson, we'll stay positive as we practice simplifying algebraic expressions that have those tricky negative signs.

Writing Equations with Inequalities: Open Sentences and True/False Statements

8. Writing Equations with Inequalities: Open Sentences and True/False Statements

After watching this video lesson you will be able to write open sentences and true or false statements that use inequalities. You will also be able to solve and/or determine whether a particular inequality is true or false.

Common Algebraic Equations: Linear, Quadratic, Polynomial, and More

9. Common Algebraic Equations: Linear, Quadratic, Polynomial, and More

Watch this video lesson to see the kinds of equations that you will come across most often in algebra. Learn to distinguish them by just looking for the identifying components of each equation.

Defining, Translating, & Solving One-Step Equations

10. Defining, Translating, & Solving One-Step Equations

Watch this video lesson to learn how you can write a simple math equation when you are given a word problem. Learn how to translate words into math symbols. Learn the shortcuts to remember.

Solving Equations Using the Addition Principle

11. Solving Equations Using the Addition Principle

In algebra, we have certain principles that we use to help us solve equations quickly and easily. The addition principle is one of them. Watch this video lesson to learn how you can apply it to solve your equations.

Solving Equations Using the Multiplication Principle

12. Solving Equations Using the Multiplication Principle

When it comes to solving equations in algebra, one of the essential skills you need is the ability to multiply. Watch this video lesson to learn how you can use the multiplication principle to isolate your variable.

Solving Equations Using Both Addition and Multiplication Principles

13. Solving Equations Using Both Addition and Multiplication Principles

Most times in algebra, to solve for your variable, you will need to perform more than one operation to get your answer. Watch this video lesson to learn the proper steps to take to solve these equations.

Collecting Like Terms On One Side of an Equation

14. Collecting Like Terms On One Side of an Equation

When you are using algebra to solve your problems, one of your biggest and most often used methods is that of collecting like terms. Watch this video lesson to see how it is done.

Solving Equations Containing Parentheses

15. Solving Equations Containing Parentheses

When we have parentheses in our equations it changes the way we solve them. Now we have an added step to do to remove those parentheses. Watch this video lesson to learn how it is done.

Solving Equations with Infinite Solutions or No Solutions

16. Solving Equations with Infinite Solutions or No Solutions

In algebra, there are two scenarios that give us interesting results. Watch this video lesson to learn how you can distinguish problems that have no answers and problems that have an infinite number of answers.

Translating Words to Algebraic Expressions

17. Translating Words to Algebraic Expressions

When it comes to word problems, the easiest way to solve them is to look for keywords and change them into math symbols. Watch this video lesson to find out what keywords you should look for and what math symbols they represent.

How to Solve One-Step Algebra Equations in Word Problems

18. How to Solve One-Step Algebra Equations in Word Problems

Word problems may be considered the most evil math invention ever, but never fear! Just watch this video lesson and you will know how to methodically translate these word problems into simple math and then to solve it.

How to Solve Equations with Multiple Steps

19. How to Solve Equations with Multiple Steps

In algebra, when you want to solve an equation for a particular variable, you will need to perform multiple steps that include adding, subtracting, multiplying, and dividing. Watch this video lesson to learn the order you need to do these steps.

How to Solve Multi-Step Algebra Equations in Word Problems

20. How to Solve Multi-Step Algebra Equations in Word Problems

After watching this video lesson, you will be able to solve word problems like a pro. Learn how to setup your problem, write your equations and then solve your equations to find your answer.

Algebra Terms Flashcards

Algebra Terms Flashcards

Want to learn some basic algebra words? Use this flashcard set to learn and understand what some common algebra words and symbols mean and how they relate to each other in algebraic equations.

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