Education Technology

# Activities

• ##### Subject Area

• Maths: Algebra I: Equations and Inequalities

9-12

50 Minutes

• ##### Software

TI InterActive!™

• ##### Other Materials
This is activity 3 from the EXPLORATIONS Book TI InterActive! Math for High School

## Solving Systems of Equations: The Method of Elimination

#### Activity Overview

Whenever a system of n equations with n unknowns is given there are several methods that can be used to find the solution to the system if a solution exists. In this activity, you will use the method of elimination to solve systems of equations.

#### Before the Activity

• See the attached PDF file for detailed instructions for this activity.
• Print pages from the attached PDF file for your class as needed.
• #### During the Activity

Students will:

• Use the elmination method, solve the system of equations:
• 5x-3y+4z=19
3x+5y-4z=7
-7x+2y-2z=-16

#### After the Activity

Review student results:

• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary