1. Critical Thinking Skill: Demonstrate Understanding of Concepts
Two Step Equations
Critical Thinking Skill:
Demonstrate Understanding of Concepts

2. Two Step Equations
Review:
1) x - 6 = 15
2). 3x = 21

3. All in one problem... ex 1: 3x - 6 = 15 ex 2: 12x - 14 = 10
“Undo” addition and subtraction first
“Undo” multiplication and division next
the opposite of order of operation
ex 1: 3x - 6 = 15
ex 2: 12x - 14 = 10

4. 3.) 3x + 7 = 16   4.)
5.) -y + 14 = -8
6.) r + 7 = -4 3

5. Word Problem:
A rental car company charges a base fee of $25 plus $0.40 
per mile driven. How much would it cost to rent a car and drive 20 miles?

6. Word Problem:
Steps:
1.) Describe what the variable represents in words (find the unknown)
2.) Write and solve the equation.
3.) Write your answer in a sentence
A rental car company charges a base fee of $40.50 plus $0.50 per mile driven. How many miles did you drive if the total bill is $50.50?

7. Demonstrate Understanding
2.)
1.) 2q -72 = -8
4.) 6 2m =8
3.) 3n + 8 = 2
5.) -9d + 4= -5

8. 6.) Erica went shopping for new clothes for school. She bought a pair
Word Problem:
Steps:
1.) Describe what the variable represents in words (find the unknown)
2.) Write and solve the equation.
3.) Write your answer in a sentence
6.) Erica went shopping for new clothes for school. She bought a pair
of jeans for $35 and several shirts for $12 each. How many
shirts did Erica buy if the total bill was $83?