In this lesson, you will continue to develop your understanding of solving systems by elimination. You will be given a system that represents the quantities and constraints in a situation and learn to interpret, in context, the solutions to the individual equations and to the system. Ultimately, the context will be used to make sense of the sum of the two equations and why it shares a solution with the equations in the given system.
When you finish this lesson, you will be able to:
- Explain why adding or subtracting two equations that share a solution results in a new equation that also shares the same solution.
Here are the activities that will help you reach those goals:
- 2.5.1: Writing and Evaluating New Equations
- 2.5.2: Adding Two Equations in a System
- 2.5.2: Self Check
- 2.5.2: Additional Resources
- 2.5.3: Solving Systems of Linear Equations in Two Variables
- 2.5.3: Self Check
- 2.5.3: Additional Resources
- 2.5.4: Solving Systems of Equations Using Real-World Examples
After that, you’ll practice and review.
- 2.5.5: Practice
- 2.5.6: Lesson Summary