Explicație pas cu pas:
[tex] \frac{17}{18} + \frac{2}{9} = \frac{17}{18} + \frac{4}{18} = \frac{21}{18} [/tex]
[tex] \frac{7}{12} + \frac{7}{8} = \frac{14}{24} + \frac{21}{24} = \frac{35}{24} [/tex]
