Common Algebra Mistakes
Example: Solving a Linear Equation |

The Goal
Solve the following equation for x:
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
As "The Correction" shows, the attempted solution takes the long route to solving the equation, in addition to including three signs errors. First, To solve the equation more directly (and correctly), multiply out the 2(x-4) term and then combine x terms, while moving the non-x term to the right side. It does not help to move any of the x terms to the right! |

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