Răspuns:
Explicație pas cu pas:
x/2 = y/6
x = 2y/6 = y/3
4x + 6y = 4y/3 + 6y = 4y/3 + 18y/3 = 22y/3
x + y = y/3 + y = y/3 + 3y/3 = 4y/3
(4x + 6y)/(x + y) = (22y/3)/(4y/3) = 22y/3*3/4y = 22/4 = 11/2