Texas Education Agency
Texas Gateway: Solving Systems of Equations With Algebraic Methods
Given verbal and/or algebraic descriptions of situations involving systems of two-variable linear equations, the student will solve the system of equations by different methods.
Help Algebra
Help algebra.com: Addition Method to Solve Systems
Also known as the Elimination Method, the Addition Method is used in solving several systems of equations. This step-by-step demonstration is a helpful resource to use when learning about solving systems.
Cool Math
Coolmath: Systems of Equations Solving by Elimination
Reference material and practice problems solving systems of equations using elimination.
Cool Math
Coolmath: Systems of Equations Solving by Elimination With 3x3's
Reference material and practice problems solving systems of equations using elimination.
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Systems of Nonlinear Equations
Learn how to solve a system of nonlinear equations using the substitution and the elimination methods. This tutorial offers definitions, problems and step-by-step solutions, and practice exercises for you to complete and check.
J Coffman
Joseph Coffman's Lecture Notes: Solving Systems of Equations Algebraically
The lesson explores solving systems of equations algebraically. Topics discussed are the elimination method, substitution method, addition property, and special cases. Examples with detailed solutions and an assessment are included.
Interactive Mathematics
Interactive Mathematics: Solving Systems Algebraically
Both the substitution and elimination methods are presented through detailed examples. Learn step by step how to find solutions to any linear system of two variables.
Oak Ridge National Laboratory
Ornl: 7 Gaussian Elimination on Band Matrices
This site gives an example of solving a system of equations with the use of Gaussian Elimination.
Khan Academy
Khan Academy: Solve Systems of Linear Equations With Elimination (Advanced)
In this exercise, students practice solving systems of linear equations with elimination (advanced). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Solve Systems of Linear Equations With Elimination (Basic)
In this exercise, students practice solving systems of linear equations with elimination. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Systems of Equations With Elimination
Solve systems of equation with one-step elimination (e.g., x-values or y-values cancel each other out). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Khan Academy
Khan Academy: Systems of Equations With Elimination Challenge
Solve systems of equations with multi-step elimination (e.g., a manipulation is needed in order for x-values and y-values to cancel each other out). Students receive immediate feedback and have the opportunity to try questions...
Lawrence Hall of Science
The Math Page: Skill in Algebra: Simultaneous Linear Equations
Here is a site that clearly and thoroughly explains how to solve systems of linear equations using the methods of combination, substitution, and Cramer's Rule. There are example problems solved, problems for the student to attempt, and...
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Systems of Linear Equations in Two Var.
This tutorial will guide you through several tasks associated with systems of linear equations in two variables. Complete with definitions, problems with step-by-step solutions, and example exercises for you to complete and check.
CK-12 Foundation
Ck 12: Algebra: Linear Systems: Solve by Elimination Study Guide
This comprehensive study guide highlights the main terms and formulas needed to review linear systems, specifically solving by elimination. Examples are included.
Oswego City School District
Regents Exam Prep Center: Solving Systems Using Addition or Subtraction
Three examples are used to demonstrate solving a system of linear equations algebraically using addition and subtraction. The examples cover different situations that occur with the coefficients of the variable terms. Includes several...
McGraw Hill
Glencoe Mathematics: Quiz on Solving Systems of Linear Equations
Learners show comprehension of advanced mathematical concepts in Algebra II. The questions check understanding on solving systems of linear equations. Topics include solving systems using graphing, substitution, and elimination methods.
Texas A&M University
Wtamu Virtual Math Lab: Solving Systems of Linear Equations in Three Variables
This tutorial will show you how to solve a system of linear equations in three variables by using the elimination method. Complete with definitions, example problems with step-by-step solutions, and practice exercises for you to complete...
Khan Academy
Khan Academy: Algebra: Equivalent Systems of Equations
Determine whether a couple of given systems of equations are equivalent or not to a third given system. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Wolfram Research
Wolfram Math World: Gaussian Elimination
This site provides an example of Guassian Elimination and concludes with a specific example.
ClassFlow
Class Flow: Solving Systems Using Elimination
[Free Registration/Login Required] This flipchart shows students how to solve systems of linear equations using elimination.
Other
Algebra.com: Linear Equation and System Solvers: Solve Linear Systems
This interactive linear system solver allows you to enter two linear equations in general form and then plot the lines and find the answer using either substitution or elimination. The answer is presented with both methods accompanied by...
McGraw Hill
Glencoe Mathematics: Quiz on Solving Systems of Equations in Three Variables
The online assessment demonstrates knowledge of advanced mathematical concepts in Algebra II. The questions test students on solving systems of equations in three variables. Topics include solving systems using the substitution and...
Texas Instruments
Texas Instruments: Linear Systems: Using Algebra
Students learn to solve a system of linear equations (2 equations with 2 variables) by substitution and elimination methods. They also review the definitions of consistent (independent and dependent) and inconsistent systems, and...