Solving systems of two linear equations example | Algebra I | Khan Academy

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/mappers/operations-and-algebraic-thinking-228-230/x261c2cc7:number-of-solutions-to-systems-of-equations/v/understanding-systems-of-equations-example-2 Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/systems-of-linear-equations/analyzing_the_solutions_to_systems_of_equations/e/systems_of_equations?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson: https://www.khanacademy.org/math/algebra/systems-of-linear-equations/systems_of_linear_equations_word_problems/v/solving-systems-by-elimination?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/systems-of-linear-equations/analyzing_the_solutions_to_systems_of_equations/v/solving-systems-by-substitution-1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineer

Published 2013-08-09 · Watch on YouTube ↗
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