Răspunsuri

2014-05-11T22:29:55+03:00
X-nr animalelor
0,5 din x= 5/10 *x= x/2-lei

x-x/2= (2x-x)/2= x/2-restul
0,25 din x/2= 25/100 *x/2= 1/4 *x/2=x/8-ursi

x/2-x/8= (4x-x)/8= 3x/8-noul rest
0,5 din 3x/8= 5/10 *3x/8= 3x/16-vulpi

x/2 + x/8 +3x/16 +3=x  aducem la acelasi numitor
8x+2x+3x+48=16x
13x+48=16x
13x-16x=-48
-3x=-48
3x=48
x=16

16/2=8lei
16/8=2ursi
3*16/16= 3vulpi
2 5 2