Join Karin Hutchinson for an indepth discussion in this video Using opposite operations when solving equations, part of Learning Algebra: Solving Equations.
 As we begin talking about the basics to solving equations,…another term that you will hear me use…is opposite operations.…In order to isolate the variable,…which we just talked about in the last lesson,…we will need to use opposite operations.…This is actually pretty easy.…Let's take a look.…We're going to begin by looking at the equation,…the operation, and what's known as the opposite operation…that we'll need to use in order to solve the equation.…So our first equation is x plus three equals five.…
We know that we need to isolate the variable which is x,…which means we need to get x by itself.…That means we need to get rid of the three.…So we need to look at the operation.…The operation is plus three.…The operation is the addition sign.…Since we need to get rid of the plus three,…we need to use an opposite operation.…The opposite of addition is subtraction.…So we would subtract three in this equation.…Let's take a look at another equation,…x minus three equals two.…
Again, we want to isolate the variable x…
Author
Karin HutchinsonReleased
10/19/2015 Isolating variables
 Keeping equations balanced
 Solving addition and subtraction equations
 Solving multiplication and division equations
 Solving equations that involve the distributive property
 Solving twostep and multistep equations
 Solving equations with decimals and fractions
 Solving equations with variables on both sides
 Understanding literal equations
 Solving absolute value equations
Skill Level Appropriate for all
Duration
Views
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Introduction

Welcome1m


1. Introduction to Solving Equations

Keeping equations balanced1m 30s

2. Addition Equations

3. Subtraction Equations

4. Multiplication Equations

5. Division Equations

6. TwoStep Equations

Solving a twostep equation1m 56s

7. Solving Multistep Equations with the Distributive Property

8. Solving Equations with Decimals

9. Solving Equations with Fractions

10. Solving Literal Equations

11. Equations with Variables on Both Sides

12. Solving Multistep Equations

13. Solving Absolute Value Equations

Conclusion

Next steps37s

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Video: Using opposite operations when solving equations