Răspuns:
[tex]2.(3) \div 3 \frac{1}{2} [/tex]
[tex] = \frac{23 - 2}{9} \div \frac{3 \times 2 + 1}{2}[/tex]
[tex] = \frac{21}{9} \div \frac{7}{2} [/tex]
[tex] = \frac{21}{9} \times \frac{2}{7} [/tex]
[tex] = \frac{6}{9} = \frac{2}{3} [/tex]
