Răspunsuri

2014-09-20T15:22:29+03:00
Daca 5+8y/ 5x+12y= 3/4  [ inmultim pe diagonala] => 4*(5+8y)=3*(5x+12y)=>20+32y=15x+36y=>36y-32y=20-15x=4y=5x=>4/5
9 4 9