(X;Y) i.p. (2;3)
X+Y=63
Xsupra1supra2=Ysupra1supra3=K⇔X·2=Y·3=K
[tex]X= \frac{K}{2} si Y= \frac{K}{3} [/tex]
[tex] \frac{K}{2} + \frac{K}{3} =63 (aplificam prima fractie cu 3 si a doua cu2)[/tex]
[tex] \frac{3K+2K}{6} =63[/tex]
[tex] \frac{5K}{6} =63[/tex]
5K=63x6
5K=378
K=378:5
K=75,6
X=75,6:2=37,8
Y=75,6:3=25,2
