Răspuns:
presupun ca asa arata exercitiul
[tex]( \frac{3 }{14} + \frac{5 }{14} ) + ( \frac{7}{15} + \frac{2}{15} ) + ( \frac{5}{18} + \frac{4}{18} ) + ( \frac{13}{54} + \frac{5}{54} ) [/tex]
deci daca e asta am so rezokv daca nu trimite o poza
[tex] \frac{8}{14} + \frac{9}{15} + \frac{9}{18} + \frac{15}{54} [/tex]
[tex] \frac{4}{7} + \frac{3}{5} + \frac{1}{2} + \frac{5}{18} [/tex]
[tex] \frac{315}{1260} + \frac{420}{1260} + \frac{630}{1260} + \frac{552}{126} [/tex]
[tex] \frac{1917}{1260} [/tex]
[tex] \frac{639}{420} [/tex]
[tex] \frac{313}{140} [/tex]
simplifica mai departe daca ai nevoie.....
