Răspuns:
[tex]a) \frac{9}{8} - \frac{1}{2} = \frac{9 - 4}{8} = \frac{5}{8} [/tex]
[tex]b) \frac{7}{3} - \frac{5}{9} = \frac{21 - 5}{9} = \frac{16}{9} [/tex]
[tex]c) \frac{23}{12} - \frac{5}{3} = \frac{23 - 20}{12} = \frac{3}{12} = \frac{1}{4} [/tex]
[tex]d) \frac{28}{15} - \frac{2}{3} = \frac{28 - 10}{15} = \frac{18}{15} = \frac{6}{5} [/tex]
[tex]e) \frac{29}{24} - \frac{3}{4} = \frac{29 - 18}{24} = \frac{11}{24} [/tex]
[tex]f) \frac{7}{4} - \frac{23}{28} = \frac{49 - 23}{28} = \frac{26}{28} = \frac{13}{14} [/tex]
