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This algebra video tutorial explains how to solve system of equations with 3 variables and with word problems. It contains two example word problems on investment and on total value.

Matrices - Free Formula Sheet:

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Systems of Linear Equations - 2 Variables:


Systems of Equations - Fractions & Decimals:


One Solution, No Solution or Many Solutions?


Systems of Equations - Substitution Method:


Solving Systems of Equations By Graphing:


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Systems of Linear Equations - 3 Variables:


Systems of Equations - Word Problems:


Systems of Quadratic Equations:


Systems of Nonlinear Equations:


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Final Exams and Video Playlists:


Full-Length Videos and Worksheets:

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