Răspunsuri

2014-04-28T08:01:09+03:00
X/2=y/3 echivalent 3x=2y
x+y=55 
2x+2y=110
2x+3x=110
x=22 rezulta ca y=33
2014-04-28T08:41:29+03:00
Facem un sistem de 2 ecuatii cu 2 necunoscute
x+y=55
x/2=y/3 aducem la acelasi numitor
3x=2y
3x-2y=0
x+y=55|x2
2x+2y=110
5x=110
x=110/5
x=22
y=33