- Students will identify equivalent equations.
- Students will solve a system of linear equations in two unknowns by adding equivalent equations to eliminate one variable.
- Students will look for and express regularity in repeated reasoning (CCSS Mathematical Practice).
- equivalent equations
- system of linear equations
- solution to a system
About the Lesson
This lesson involves solving a system of linear equations in two variables. The emphasis is on helping students understand how to use equivalent equations and the method of elimination to solve a system. Students can combine elimination and substitution to solve systems more efficiently. Students can determine which method is most appropriate for solving a system.