Algebra Review – Solving Systems by Substitution and Method of Choice

Solving Systems by Substitution and Method of Choice

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Students learn to solve systems of equations by substitution by first isolating a variable in one of the equations in the system, then substituting its value for the corresponding variable in the other equation. Students also learn to solve systems of equations by the method of their choice using the following rules: if one of the variables cancels out when the equations are added together, then use addition, and if a variable is already isolated in one of the equations, use substitution.
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