Răspunsuri

2014-06-30T14:47:24+03:00
X/y=4/9

x=4y/9

(3x+2y)/(5x+y)

(3*4y/9+2y)/ (5*4y/9+y)

(4y/3+2y)/ (20y/9+y)  aducem la acelasi numitor in paranteze

(4y+6y)3/(20y+9y)/9

10y/3/29y/9

10y/3 *9/29y=

30y/29y=  30/29
am redactat gresit la sfarsit era 5x+y
este supra sau egal cu 5x+y?
supra
gata