1. 
A number multiplied by three is 27.

A number divided by eight is two.

A number tripled and increased by ten is 22.

2. 

3. 

5. 




Adding and subtracting Integers
Multiplying and dividing Integers
Properties of Addition
Properties of Multiplication
Solving one-step equations
◦ x – 12 = 22
◦ 4x = 48

6. 
Students will learn to…
◦ Solve 2-step equations.

7. 


Each group will read about a method used to
solve 2 step equations.
After your group has read the selection, your
job is to teach it to another group.
Each group member must have a role.

8. 

Write down any questions you have about
your method.
Prepare to teach your method to the class or
other groups…

9. 
With your group, prepare a lesson to teach
your method to the class using the above
problem.
Solve 2 step
equations.

10. Without guess and check,
what steps are used to solve
this equation?
Goal: Isolate the
variable
Question: How
can I get the
variable by itself?
How is this process related to the order of
operations?
x=4

11. 
Order of Operations – backwards
◦ 1) Combine like terms
◦ 2) Undo addition or subtraction
◦ 3) Undo multiplication or division

Like terms: 3x + 5 + 5 = 22

12. 
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

13. 
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

14. 

16. 