Răspunsuri

2014-05-17T11:27:04+03:00
X-nr porcilor
y-nr gainilor
z-nr ratelor

x+y+z=130
y=5z

x+5z+z=130
x+6z=130

4x+2y+2z=268
4x+2*5z+2z=268
4x+10z+2z=268
4x+12z=268

x+6z=130    |-4
4x+12z=268

-4x-24z=-520
4x+12z=268
/ -12z= -252
12z=252
z=21

x+6*21=130
x+126=130
x=4

y=5*21=105
10 4 10