[tex]5 - 2.(3) = 5 - 2 \frac{3}{9} = 5 - \frac{2 \times 9 + 3}{9} = 5 - \frac{18 + 3}{9} = 5 - \frac{21}{9} = 5 - \frac{7}{3} = \frac{5 \times 3}{3} - \frac{7}{3} = \frac{15}{3} - \frac{7}{3} = \frac{15 - 7}{3} = \frac{8}{3} [/tex]
Răspuns:
5-2,(3)=2,(6)
sau
2,(3)=(23-2)/9=21/9=7/3
³⁾5-7/3=15/3-7/3=8/3=2,(6)
