[tex] \frac{6}{4} + \frac{5}{8} + \frac{2}{5} [/tex]
Aduci la acelasi numitor:
[tex] \frac{6}{4} = \frac{3}{2} = \frac{3 \times 20}{2 \times 20} = \frac{60}{40} [/tex]
[tex] \frac{5}{8} = \frac{5 \times 5}{8 \times 5} = \frac{25}{40} [/tex]
[tex] \frac{2}{5} = \frac{2 \times 8}{5 \times 8} = \frac{16}{40} [/tex]
Acum se aduna numaratorii si se copiaza numitorii
[tex] \frac{60 + 25 + 16}{40} = \frac{101}{40} = 2 \frac{21}{40} [/tex]
