- andrei la Operaţii Cu Numere Raţionale – Exerciţii Rezolvate
- Florin la Adunarea si Scaderea Fractiilor
- Nu la Operaţii cu Intervale
- Andreea la Operaţii cu Intervale
- Adelin la Adunarea si Scaderea Fractiilor
Algebra is the branch of mathematics concerning the study of the rules of operations and relations, and the constructions and concepts arising from them, including terms, polynomials, equations and algebraic structures. Together with geometry, analysis, topology, combinatorics, and number theory, algebra is one of the main branches of pure mathematics.