Răspuns:
[tex]a) \ 1+\dfrac{3}{5} = \dfrac{5}{5}+\dfrac{3}{5} = \dfrac{5+3}{5} = \dfrac{8}{5}[/tex]
[tex]b) \ 1-\dfrac{4}{6} = \dfrac{6}{6}-\dfrac{4}{6} = \dfrac{6-4}{6} = \dfrac{2}{6}[/tex]
[tex]c) \ \dfrac{29}{15}-1 = \dfrac{29}{15}-\dfrac{15}{15} = \dfrac{29-15}{15} = \dfrac{14}{15}[/tex]