Răspuns: 13/14
Explicație pas cu pas:
[tex]\displaystyle 0,2 \ \cdot \ \frac{5}{7} \ + \ \frac{11}{14} \ = \\ \\\displaystyle \frac{2}{10} \ \cdot \ \frac{5}{7} \ + \ \frac{11}{14} \ = \\ \\\\\displaystyle \ \frac{2}{14} \ + \ \frac{11}{14} \ = \\ \\\\\displaystyle \ \frac{2 \ + \ 11 }{14} \ = \\\\\\\\\displaystyle \ \frac{ 13 }{14}[/tex]
