1 http://youtu.be/SqcmGZai6Zk
2: Solving System of Equations
http://youtu.be/wIUezT7gC90 3: Solving Simultaneous Equations by Elimination
http://youtu.be/mUBns5z8yMw 4: Solving Simultaneous Equations by Substitution
http://youtu.be/20XqJoJ5sxI
5: Solving Simultaneous Equations Algebraically and Graphically
http://youtu.be/FaptneTlmgM
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Learning GeoGebra > 7. Screencasts >