Răspuns:
d)
[tex] \frac{8}{9} - \frac{4}{9} + 1 \frac{4}{9} = \frac{4}{9} + \frac{13}{9} = \frac{17}{9} = 1 \frac{8}{9} [/tex]
e)
[tex] \frac{5}{7} +1 \frac{4}{7} + \frac{2}{7} = \frac{5}{7} + \frac{11}{7} + \frac{2}{7} = \frac{18}{7} = 2 \frac{4}{7} [/tex]
f)
[tex]4 \frac{5}{8} - \frac{5}{8} + \frac{1}{8} = \frac{37}{8} - \frac{5}{8} + \frac{1}{8} = \frac{32}{8} + \frac{1}{8} = \frac{33}{8} = 4 \frac{1}{8} [/tex]
