1. 


At the Ringgold County Fair and Carnival, it
costs $15 to get into the fairgrounds. It costs
extra to ride the premium rides. Julia rode 8
premium rides. After day was over, Julia had
spent a total of $27. What was the cost of
each premium ride.
Write an algebraic equation.
You do not need to solve…

2. 

At the Ringgold County Fair and Carnival, it
costs $15 to get into the fairgrounds. It costs
extra to ride the premium rides. Julia rode 8
premium rides. After day was over, Julia had
spent a total of $27. What was the cost of
each premium ride.
Write an algebraic equation.
◦ 8x + 15 = 27

You do not need to solve…

3. 
Integer operations

Properties of addition and multiplication

Solving Equations
◦ Bar Model
◦ Inverse Operations Model

4. 
Students will learn to…
◦ Write and solve 2-step equations.

5. 



8x + 15 = 27
- 15 = - 15
8x = 12
Goal: Isolate the
variable
Question: How
can I get the
variable by itself?
8x = 12
8
8
x = 1.5
 What does that mean for the context of our
problem?

6. Goal: Isolate the variable
Subtract 15
x
x
x
x
x
x
x
x
x
x
x
27
x
x
x
x
x
12
15

7. ◦ 1) Combine like terms
◦ 2) Undo addition or subtraction
◦ 3) Undo multiplication or division

Like terms: 3x + 5 + x + 5 = 22

8. 
Simplify by combining like terms
◦ 5x + 12 + (-9) = 8
◦ 5x + 3 = 8

Undo addition or subtraction
◦ 5x + 3 = 8
◦
- 3 = -3
◦ 5x = 5

Undo multiplication or division
◦ 5x = 5
◦ 5
5
◦ x=1

9. 
Simplify by combining like terms
◦ 2x + x + 10 = 25
◦ 3x + 10 = 25

Undo addition or subtraction
◦ 3x + 10 = 25
◦
- 10 = -10
◦ 3x = 15

Undo multiplication or division
◦ 3x = 15
◦ 3
3
◦ x=5

10. 

11. Target Practice:
Pg. 363 #3-5, 27-30