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Published byLetitia Parks Modified over 8 years ago

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Solving Systems of three equations with three variables Using substitution or elimination

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Using substitution Isolate a variable in one equation Substitute for the isolated variable in the other two equations – Now you have two variables and two equations… You can solve these two equations using either substitution or elimination

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Using Elimination Use a combination of any two equations to eliminate a variable. Use two different equations to eliminate the SAME variable. – Now you have two variables and two equations… You can solve these two equations using either substitution or elimination

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