Răspunsuri

2014-04-27T13:14:41+03:00
X+y=2490
6,5/100·x=8,5/100·y⇒65x=85y⇒x=17/13·y⇒x=1411
17/13y+y=2490⇒17y+13y=32370⇒30y=32370⇒y=1079
2 1 2
2014-04-27T13:15:13+03:00