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How to solve systems of equations

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Introduction

A brief powerpoint demonstrating three methods for solving systems of equations. Graphically, by substitution, and by elimination

By: dbusenbark

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Instructions

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Difficulty: Moderate

Tips & Warnings:

  • Remember it is important to keep track of signs, especially when you are distributing
  • Biggest mistake people make is they forget to check their answer in the problem to make sure that it gives a correct solution.

Step1
There are three methods for solving systems of equations. The video goes through all three methods
Step2
Graphing requires you to draw the graph and identify where the lines cross. Remember that not all lines cross. Sometimes your answer may be no solution. You could also have the same equation and have infinite solutions
Step3
Elimination and substitution are algebraic methods for solving systems of equations.

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