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Brian McLogan
Learn how to solve a word problem of a system of equations
đŸ‘‰Learn how to solve a system of linear equations from a word problem. A system of equations is a set of more than one equations which are to be solved simultaneously. A word problem is a real world simulation of a mathematical concept....
Khan Academy
Khan Academy: Solving a System of 3 Equations and 4 Variables Using Matrix
Sal solves a linear system with 3 equations and 4 variables by representing it with an augmented matrix and bringing the matrix to reduced row-echelon form.