Hej!
[tex] \frac{1}{3} + \frac{1}{5} = \frac{5}{15} + \frac{3}{15} = \frac{8}{15} [/tex]
[tex] \frac{2}{5} - \frac{1}{4} = \frac{8}{20} - \frac{5}{20} = \frac{3}{20} [/tex]
[tex] \frac{3}{7} + \frac{2}{9} = \frac{27}{63} + \frac{14}{63} = \frac{41}{63} [/tex]
[tex] \frac{4}{7} - \frac{1}{6} = \frac{24}{42} - \frac{7}{42} = \frac{17}{42} [/tex]
[tex] \frac{1}{2} - \frac{3}{9} = \frac{1}{2} - \frac{1}{3} = \frac{3}{6} - \frac{2}{6} = \frac{1}{6} [/tex]
[tex] \frac{1}{8} + \frac{1}{5} = \frac{5}{40} + \frac{8}{40} = \frac{13}{40} [/tex]
[tex] \frac{3}{4} - \frac{2}{3} = \frac{9}{12} - \frac{8}{12} = \frac{1}{12} [/tex]
[tex] \frac{7}{8} - \frac{1}{3} = \frac{21}{24} - \frac{8}{24} = \frac{13}{24} [/tex]
Pozdrawiam! - Julka
