Răspuns :
[tex] \frac{2}{3} \div \frac{1}{3} - 3 \div 9 = 1[/tex]
[tex] \frac{2}{3} \times \frac{3}{1} - 0.(3) = 1[/tex]
[tex] \frac{2}{1} - \frac{3}{9} = 1[/tex]
[tex] \frac{18}{9} - \frac{3}{9} = 1[/tex]
[tex] \frac{15}{9} nu \: este \: egal \: cu \: 1[/tex]