Răspuns:
[tex]2. \: a)2 \frac{1}{3} \times \frac{4}{7} + \frac{9}{5} \div 3 - \frac{1}{12} = [/tex]
[tex]2 \times 3 + 1 = 6 + 1 = 7[/tex]
[tex] \frac{7}{3} \times \frac{4}{7} + \frac{9}{5} \div \frac{3}{1} - \frac{1}{12} [/tex]
[tex] \frac{7}{3} \times \frac{4}{7} = \frac{4}{3} [/tex]
[tex] \frac{9}{5} \div \frac{3}{1} = \frac{9}{5} \times \frac{1}{3} = \frac{3}{5} [/tex]
[tex] \frac{4}{3} + \frac{3}{5} - \frac{1}{2} = \frac{20}{15} + \frac{9}{15} = \frac{29}{15} - \frac{1}{12} = \frac{348}{180} - \frac{15}{180} = \frac{348 - 15}{180} = \frac{333}{180} [/tex]
