2.1/2.2 Solve One-and Two-Step Equations Lesson Slides

9 Slides • 6 Questions

1

2.1- Solve One-Step Equations

2.2- Solve Two-Step Equations

2

Objectives

To solve one-step equations in one variable
To solve two-step equations in one variable

3

Subtraction Property of Equality

Addition Property of Equality

Properties of Equality

4

Division Property of Equality

Multiplication Property of Equality

Properties of Equality

5

Multiple Choice

What is your first step to solve $x-3=2?$

1

Subtract 3 from both sides

2

Add 3 to both sides

3

Multiply both sides by 3

4

Divide both sides by 3

6

Open Ended

Solve $x+20=12$ for $x.$

Type response here

7

Multiple Choice

What is the reciprocal of $\frac{2}{5}?$

1

2

5

3

$\frac{5}{2}$

4

$-\frac{5}{2}$

8

Open Ended

Solve for $d:$

$\frac{2}{5}d=15$

Type response here

9

Solving two-step equations:

Save the variable term for last

It's a little like doing PEMDAS in reverse. First undo the addition or subtraction, then undo the multiplication or division.

10

Example

11

Example

12

What if there's two terms in the numerator?

13

Multiple Choice

Solve for $x:$

$15=\frac{x+5}{2}$

1

17

2

5

3

25

4

10

14

Poll

Select the image that best represents how you feel about your skills at solving one- and two-step equations:

15

For the rest of your points today:

Complete the remaining exercises on the notes handout

2.1- Solve One-Step Equations

2.2- Solve Two-Step Equations

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