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In this problem we are faced with an apparently easy area problem, but it has gone horribly wrong! What happened?

Thousands of X

Age 14 to 16 Short
Challenge Level

Solve the equation $(x-2013)(x-2012)-(x-2012)(x-2011)=0.$

This problem is adapted from the World Mathematics Championships

You can find more short problems, arranged by curriculum topic, in our short problems collection.