Răspunsuri

Cel mai inteligent răspuns!
2014-10-19T19:32:48+03:00
A+b=-2 1/5⇒a+b=-11/5
a=65/100·b⇒a=13b/20(am simplificat fractia prin 5)
13b/20+b=-11/5(amplificam cu 20 pe b si obtinem)
13b/20+20b/20=-11/5⇒33b/20=-11/5
33b=-11·20 totul supra 5,simplificam 20 cu 5 si obtinem
33b=-44⇒b=-44/33 simplificam prin 11si⇒-4/3
               a=13·(-4/3)/20⇒-13/15
               
3 5 3