Răspuns:
[tex]a) > \: 1 \frac{8}{9} + 3 \frac{4}{15} = \frac{232}{45} \\ [/tex]
[tex]b) - \frac{7}{16} + \frac{5}{24} = - \frac{11}{48} [/tex]
[tex]c) \frac{12}{35} \times ( - \frac{5}{6}) = - \frac{2}{7} [/tex]
[tex] \frac{11}{12} \div 1 \frac{7}{15} = \frac{5}{8} [/tex]
