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Algebra > Algebraic fractions

##### Age 11 to 14 Challenge Level:

The Egyptians expressed all fractions as the sum of different unit
fractions. Here is a chance to explore how they could have written
different fractions.

##### Age 11 to 14 Challenge Level:

Can all unit fractions be written as the sum of two unit fractions?

##### Age 14 to 16 Challenge Level:

Can you see how to build a harmonic triangle? Can you work out the next two rows?