선형방정식(Linear Equation)

• $ax=b$

  [PDF] [영상(YouTube)] [NFT]

• 이원일차연립방정식(System of Two Linear Equations in Two Variables)

  [PDF] [영상(YouTube)] [NFT]

• 미지수가 두 개인 연립일차방정 연습문제(Exercises on System of Two Linear Equations in Two Variables)

  [PDF] [AlgeoMath] [Geogebra Tube] [NFT]