Răspuns:
[tex] \frac{3}{10} + \frac{7}{4} - 1 \frac{4}{5 } [/tex]
[tex] \frac{3}{10} + \frac{7}{4} - \frac{9}{5} [/tex]
[tex] \frac{6 + 35 - 36}{20} [/tex]
[tex] \frac{5}{20} [/tex]
[tex] \frac{1}{4} [/tex]
