[tex]a= \frac{2x}{3x} [/tex], a2x şi 3x fiind în baza zece, buuun
x = 0: a = [tex] \frac{20}{30} = \frac{2}{3} [/tex]
x = 1: a = [tex] \frac{21}{31} [/tex]
x = 2: a = [tex] \frac{22}{32} = \frac{11}{16} [/tex]
x = 3: a = [tex] \frac{23}{33} [/tex]
x = 4: a = [tex] \frac{24}{34} = \frac{12}{17} [/tex]
x = 5: a = [tex] \frac{25}{35} = \frac{5}{7} [/tex]
deci elementele mulţimii sunt: [tex] \frac{2}{3} , \frac{21}{31} , \frac{11}{16} , \frac{23}{33} , \frac{12}{17} , \frac{5}{7} [/tex]
