Common Algebra Mistakes
Example: Solving an Equation |

The Goal
Solve the equation for c:
The Mistake
Find the algebra mistake: (Roll the mouse over the algebra to see a hint in red) The Correction
(Roll the mouse over the area above to see the correction in blue) An Explanation
The algebra attempted by the student is just plain wrong. (It appears that the student cross-multiplied the two rational expressions and added; this approach is invalid.) A correct solution starts by |

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