Răspuns :
r = 2c
r - 3 = x
c - 2 = y
x : y = 3
x = 3y
r - 3 = 3y
r - 3 = 3c - 6
2c - 3 = 3c - 6
c = 3
r = 6
unde r = Raluca
c = Cristina
r - 3 = x
c - 2 = y
x : y = 3
x = 3y
r - 3 = 3y
r - 3 = 3c - 6
2c - 3 = 3c - 6
c = 3
r = 6
unde r = Raluca
c = Cristina