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The book reports practical and theoretical arithmetic, algebra , geometry , and weights and measures mathematics. Bonaccio regularly used Arabic numerals and Egyptian fraction arithymetic in the course of his work. Leonardo was born in Pisa then its own sovereign republic, now part of Italy but spent his formative years in Bugia, helping his father.

Leonardo described the theoretical side of Arabic-Hindu numeral arithmetic. The base 10 numeral aspect of the Liber Abaci had followed suggestions of Pope Sylvester.

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Sigler in Previously the book was translated by chapters, or by math topic. The subtraction styles were implemented by Arbs in AD. Arabs had modified the Greek multication styles. Arabs and Leonardo reported three distinct arithmetic notations. The first notation allowed vulgar fractions, and aliquot parts , to be linearly summed to larger vulgar fractions.

Egyptian notations had not allowed vulgar fractions in final answers.