Răspunsuri

2014-05-18T21:24:40+03:00
Notam cu x gainile  si cu y porcii
Se formeaza sistemul :
x+y=55 /inmultim cu -2
2x+4y=140

2014-05-18T22:53:31+03:00
G=gainile
p=purcelusii
g+p=55
2g+4p=140
g=55-p
2(55-p)+4p=140
110-2p+4p=140
2p=140-110
2p=30
p=15
g=55-15
g=30