Linear Algebra > Vectors and Spaces > Matrices for solving systems by elimination 부분을 정리한 것. https://www.khanacademy.org/math/linear-algebra/vectors-and-spaces#matrices-elimination Vectors and spaces | Linear algebra | Math | Khan Academy If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that th..