Răspuns :
x - curci
y - gaini
x + 36 = y12
x = y/4
y/4 + 36 = y
y + 144 = 4y
144 = 3y
y = 48
x = 12
S = { 12 }
y - gaini
x + 36 = y12
x = y/4
y/4 + 36 = y
y + 144 = 4y
144 = 3y
y = 48
x = 12
S = { 12 }