Common Pre-Algebra Mistakes
Example: Simplifying a Fraction

The Goal

Simplify the fraction:


The Mistake

Find the 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

Use care with fractions; in this case the reciprocal of the correct answer was given as the answer.

Visit Algebra Facts > Adding and subtracting fractions to learn more.

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