Videos and lessons to help High School students learn how to explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct a viable argument to justify a solution method.

- Assuming an equation has a solution, construct a convincing argument that justifies each step in the solution process. Justifications may include the associative, commutative, and division properties, combining like terms, multiplication by 1, etc.

Common Core: HSA-REI.A.1

Related Topics:

Algebra
Word Problems

Common Core
(Algebra)

Common Core
for Mathematics

Solving and explaining simple algebraic equations--Lesson 1 of 5 (Common Core Standard A-REI.1)

In this lesson you will recognize that properties of equality apply to equations containing unknown values by making connections to real numbers.

In this lesson you will learn that properties of equality apply to equations containing unknown values by making connections to real numbers.

In this lesson you will learn to solve equations by using additive inverses.

In this lesson you will learn how to solve algebraic equations by using multiplicative inverses.

Solving and explaining simple algebraic equations--Lesson 5 of 5 (Common Core Standard A-REI.1)

In this lesson you will learn how to solve equations by using multiplicative and additive inverses.

This video explains how to solve basic one step equations.

Solving One Step Equations By Addition and Subtraction

This video introduces the solving basic equations by addition and subtraction using whole numbers.

This video provides four examples of solving one step linear equations involving decimals.

Solve One Step Equations with Fractions

This video provides several examples of how to solve one step equation containing fractions.

This video explains how to solve one step equations involving fractions.

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.