Răspuns:
Explicație pas cu pas:
4.
A = {Raluca, Matei, Tudor, Emma, Victor, Luca, Rita}
B = {Raluca, Emma, Rita}
C = {Matei, Tudor, Victor, Luca}
D = {Raluca, Matei, Tudor, Victor, Rita}
E = {Raluca, Matei, Tudor, Emma}
F = {Raluca, Emma, Victor, Rita}
G = {Matei, Victor, Rita}
H = {Raluca, Matei, Tudor, Emma, Victor, Luca}
5.
{2, -4, -11/11}
{-4, -11/11, 21/3}
{-4, +7}
