Răspunsuri

2014-04-04T23:32:27+03:00
X-nr de animale
0,5 dinx =5/10*x=x/2 -nr de lei
x-x/2 aducem la acelasi numitor 2x-x/2=x/2-restul
0,25din rest=25/100*x/2=x/6-nr de ursi
x/2-x/6 aducem la acelasi numitor 3x-x/6=2x/6 noul rest
0,5 din2x/6=5/10*2x/6=x/6-nr de vulpi
x/2+x/6+x/6+3=x  aducem la acelasi numitor
3x+x+x+18=6x
5x-6x=-18
-x=-18
x=18