This document provides instructions and examples for solving two-step equations. It begins with an objective of using properties to solve two-step equations and examples of solving equations by first undoing addition or subtraction and then undoing multiplication or division. It then provides 6 additional examples of solving two-step equations and assigns homework problems 1 through 22 from page 350 to be shown on the white board.

1. 7.1 two step equations January 27, 2012
Solve each equation
1. 9 + k = 17
2. y ­ 5 = ­4
Bellwork
Objective: using properties to solve two step equations
HW 1­22 all on white board 1

2. 7.1 two step equations January 27, 2012
To solve a two­step equation, first undo addition or
subtraction. Then undo multiplication or division. I think ­ opposite of Pemdas.
Solve 3n ­ 6 = 15.
HW 1­22 all on white board 2

3. 7.1 two step equations January 27, 2012
Solve each equation.
15x + 3 = 48 t ­ 10 = ­6
4
HW 1­22 all on white board 3

4. 7.1 two step equations January 27, 2012
Solve.
5 ­ x = 17 ­9 ­ y = ­12
7
HW 1­22 all on white board 4

5. 7.1 two step equations January 27, 2012
Lynne wants to save $900 to go to Puerto Rico.
She save $45 each week and now has $180.
To find how many more weeks w it will take to have $900,
solve 180 + 45w = 900.
HW 1­22 all on white board 5

6. 7.1 two step equations January 27, 2012
HW pg. 350 # 1 ­ 22 all
HW 1­22 all on white board 6

7. 7.1 two step equations January 27, 2012
HW 1­22 all on white board 7

8. 7.1 two step equations January 27, 2012
HW 1­22 all on white board 8