Question

aflati x si y stiind ca x pe y = 4 pe 5 si x +2y =112
vrg repede​

Answer 1

x/y = 4/5
⇒ x = 4y/5

x+2y = 112
4y/5 + 10y/5 = 112
14y/5 = 112
y/5 = 8
⇔ y = 40
⇔ x = 32