Răspuns :
[tex] \frac{11}{18} - \frac{4}{9} + \frac{5}{6} - \frac{1}{3} [/tex]
[tex] \frac{11 - 8 + 15 - 6}{18} [/tex]
[tex] \frac{12}{18} [/tex]
[tex] \frac{2}{3} [/tex]
11/18-4/9=11/18-8/18=3/18
5/6-1/3=5/6-2/6=3/6
3/18+3/6=3/18+9/18=12/18=6/9=2/3
Explicație pas cu pas: