1. 8.5 Variables both side of equation
Objective: students will be able to solve equations that have variables on both sides. They will need to determine how many solutions there will be for each problem.

2. Information How to solve 2 variable equation Isolate variable divide
If variable goes to zero: no solution.
Ex: 4x + 3 = 4x – 1
If both sides of equation are equal then: all numbers are solutions.
Ex: 4x + 1 = 4x + 1

3. Teacher Examples
5n – 2 = 3n + 6
8y + 4 = 11y – 17

4. Student Examples
25u + 74 = 23u + 92
14 + 5y = 50 – 4y

5. Teacher Examples
6x + 2 = 2(3x + 1)
5(2x + 1) = 10x

6. Student Examples
25t = 5(5t + 1)
7(2p + 1) = 14p + 7

7. Perimeters
Find the perimeter of the square.
X + 4 2x

8. Student Example Find the perimeters. Box 1 36 – 5x 4x Box 2 12x

9. Wrap-up
Questions/Comments
Ic/hw: wkbk. Pg. 53 #1-14